Security

The Savannah Compromise - what really happened?

2003 hasn't been a banner year for computer security, and that includes Linux. The CVS repository for the Linux kernel was attacked (if clumsily), several servers related to the Debian project were compromised, and the GNU Project's Savannah server was also broken into recently. Since there has been little information published about the nature of the Savannah compromise, we contacted Bradley Kuhn, executive director of the Free Software Foundation for more information.

Kuhn described the Savannah compromise as "almost identical to what happened to Debian." (A detailed account of the Debian compromise can be found here.) Kuhn said that he believes that the Savannah compromise and the Debian attacks were related, and happened at about the same time. However, he said that the project has not put a great deal of time and effort into analyzing the attacks because it was more important to put Savannah back online and to try to harden the system to see to it that a similar compromise doesn't happen again. The hard drives from Savannah have been saved for future reference, but the project is not putting its efforts into thoroughly analyzing the attacks.

For the most part, Savannah has been restored and changes have been made to try to ensure a similar attack will not be possible. However, there are still some features that remain unavailable, including Web CVS access and new projects are not being approved for the time being. According to the Savannah website, new projects will probably be accepted sometime before the end of January, 2004.

Has there been an attempt to insert a trojan into any of the code residing on Savannah? Kuhn says that they've asked the owners of projects on Savannah to go through and verify the code that is on Savannah to be sure that it hasn't been trojaned. So far, there have been no reports of tainted code. However, not all of the projects have reported their status. Kuhn also noted that projects on the Savannah website will soon have an indicator to report whether or not the developers have verified that they have checked the integrity of their software.

We also asked if there was any sensitive information on Savannah that may have been compromised. Kuhn said that the useful information on Savannah mostly consists of the code for the various projects, and that the only other information of interest would be developers' passwords. The passwords on Savannah have been reset, of course, and the developers have been encouraged to "investigate their own personal security."

For now, the GNU Project is not actively pursuing criminal prosecution of the attacker or attackers. Kuhn says that the project is not "ethically opposed" to prosecuting the intruder, but that with limited resources he'd rather divert time and energy to restoring the services and trying to harden systems to make future attacks more difficult and easier to contain.

To that end, the compromise may actually be a good thing in the long run. Kuhn said that they have contacted the CVS maintainers and have offered to pay for development of features that would allow GPG signing of commits through CVS -- making it much more difficult for changes to be inserted unnoticed into code held in a CVS repository. He said that they have also contacted the GNU Arch maintainer about adding GPG signing. Though it may take some time to develop, the addition of GPG signing to commits would be a welcome feature.

Kuhn said that he expects that the future will bring more attacks on the community, as free and open source software become more prevalent. Opponents of the open development model will no doubt be using these events as an illustration of the "dangers" of open source. Though the recent intrusions have mostly been an inconvenience, it's important that the community learn from these attacks, and redouble efforts to prevent them in the future.

Comments (21 posted)

New vulnerabilities

cvs: possible root compromise

Package(s):	cvs	CVE #(s):	CAN-2003-0977
Created:	December 29, 2003	Updated:	February 13, 2004
Description:	Stable CVS 1.11.11 has been released, adding code to the CVS server to prevent it from continuing as root after a user login, as an extra failsafe against a compromise of the CVSROOT/passwd file.
Alerts:	Whitebox WBSA-2004:004-01 2004-02-12 Fedora-Legacy FLSA:1207 2004-01-28 Conectiva CLA-2004:808 2004-01-20 Debian DSA-422-1 2004-01-13 Red Hat RHSA-2004:003-01 2004-01-09 Gentoo 200312-08 2003-12-28

Comments (none posted)

fsp: buffer overflow and directory traversal

Package(s):	fsp	CVE #(s):	CAN-2003-1022 CAN-2004-0011
Created:	January 7, 2004	Updated:	January 7, 2004
Description:	fsp suffers from both a buffer overflow vulnerability (which can be exploited to run arbitrary code) and a directory traversal problem.
Alerts:	Debian DSA-416-1 2004-01-06

Comments (none posted)

jabber: denial of service

Package(s):	jabber	CVE #(s):	CAN-2004-0013
Created:	January 7, 2004	Updated:	January 26, 2004
Description:	A vulnerability was discovered in jabber, an instant messaging server, whereby a bug in the handling of SSL connections could cause the server process to crash, resulting in a denial of service.
Alerts:	Mandrake MDKSA-2004:005 2004-01-23 Debian DSA-414-1 2004-01-06

Comments (1 posted)

kernel: two vulnerabilities in 2.4.23

Package(s):	kernel	CVE #(s):	CAN-2003-0984 CAN-2003-0985
Created:	January 5, 2004	Updated:	January 19, 2004
Description:	Paul Starzetz discovered a flaw in bounds checking in mremap() in the Linux kernel versions 2.4.23 and previous which may allow a local attacker to gain root privileges. No exploit is currently available; however, it is believed that this issue is exploitable (although not trivially.) The Common Vulnerabilities and Exposures project has assigned the name CAN-2003-0985 to this issue. There is also a minor information leak in the real time clock (rtc) routines. The Common Vulnerabilities and Exposures project has assigned the name CAN-2003-0984 to this issue. See this advisory for more information.
Alerts:	Debian DSA-427-1 2004-01-19 SuSE SuSE-SA:2004:003 2004-01-15 Debian DSA-417-2 2004-01-09 Slackware SSA:2004-008-01 2004-01-08 Gentoo 200401-01 2004-01-08 Mandrake MDKSA-2004:001 2004-01-07 Slackware SSA:2004-006-01 2004-01-06 Red Hat RHSA-2003:416-01 2004-01-07 Fedora FEDORA-2003-047 2004-01-07 Debian DSA-417-1 2004-01-07 Immunix IMNX-2004-73-001-01 2004-01-05 SuSE SuSE-SA:2004:001 2004-01-05 Fedora FEDORA-2003-046 2004-01-05 Debian DSA-413-1 2004-01-06 Trustix 2004-0001 2004-01-05 Conectiva CLA-2004:799 2004-01-05 EnGarde ESA-20040105-001 2003-01-05 Red Hat RHSA-2003:419-01 2004-01-05 Red Hat RHSA-2003:418-01 2004-01-05 Red Hat RHSA-2003:417-01 2004-01-05

Comments (1 posted)

mpg321: format string vulnerability

Package(s):	mpg321	CVE #(s):	CAN-2003-0969
Created:	January 6, 2004	Updated:	March 28, 2005
Description:	A vulnerability was discovered in mpg321, a command-line mp3 player, whereby user-supplied strings were passed to printf(3) unsafely. This vulnerability could be exploited by a remote attacker to overwrite memory, and possibly execute arbitrary code. In order for this vulnerability to be exploited, mpg321 would need to play a malicious mp3 file (including via HTTP streaming).
Alerts:	Gentoo 200503-34 2005-03-28 Debian DSA-411-1 2004-01-05

Comments (none posted)

nd: buffer overflows

Package(s):	nd	CVE #(s):	CAN-2004-0014
Created:	January 6, 2004	Updated:	January 7, 2004
Description:	Multiple vulnerabilities were discovered in nd, a command-line WebDAV interface, whereby long strings received from the remote server could overflow fixed-length buffers. This vulnerability could be exploited by a remote attacker in control of a malicious WebDAV server to execute arbitrary code if the server was accessed by a vulnerable version of nd.
Alerts:	Debian DSA-412-1 2004-01-05

Comments (none posted)

xsok: bad privilege handling

Package(s):	xsok	CVE #(s):	CAN-2003-0949
Created:	January 7, 2004	Updated:	January 7, 2004
Description:	Steve Kemp discovered a problem in xsok, a single player strategy game for X11, related to the Sokoban game, which leads a user to execute arbitrary commands under the GID of games.
Alerts:	Debian DSA-405-1 2003-12-30

Comments (none posted)

Updated vulnerabilities

apache: buffer overflows in mod_alias, mod_rewrite

Package(s):	apache	CVE #(s):	CAN-2003-0542 CAN-2003-0789
Created:	October 28, 2003	Updated:	February 13, 2004
Description:	André Malo discovered buffer overflows in the mod_alias and mod_rewrite modules of the Apache webserver. These occurred if a regular expression with more than 9 capturing parenthesis was configured. To exploit this, an attacker would need to be able to locally create a carefully crafted configuration file (.htaccess or httpd.conf). CAN-2003-0542 Another buffer overflow in Apache 2.0.47 and earlier in mod_cgid's mishandling of CGI redirect paths could result in CGI output going to the wrong client when a threaded MPM is used. CAN-2003-0789.
Alerts:	Whitebox WBSA-2004:015-01 2004-02-12 Fedora FEDORA-2003-004 2004-01-08 Red Hat RHSA-2003:405-00 2003-12-18 Red Hat RHSA-2003:320-01 2003-12-16 Red Hat RHSA-2003:360-01 2003-12-10 Gentoo 200310-03 2003-10-28 Trustix 2003-0041 2003-11-15 Conectiva CLA-2003:775 2003-11-05 Slackware SSA:2003-308-01 2003-11-03 EnGarde ESA-20031105-030 2003-11-05 Mandrake MDKSA-2003:103 2003-11-03 Gentoo 200310-04 2003-10-31 Immunix IMNX-2003-7+-025-01 2003-10-28 OpenPKG OpenPKG-SA-2003.046 2003-10-28

Comments (none posted)

apache2: Denial of Service vulnerability

Package(s):	apache2	CVE #(s):
Created:	September 29, 2003	Updated:	March 25, 2004
Description:	A problem was discovered in Apache2 where CGI scripts that write more than 4k to the standard error stream will hang the script's execution. This problem can lead to a denial of service situation. See this bug report for additional details.
Alerts:	Gentoo 200403-04 2004-03-22 Netwosix NW-2004-0006 2004-03-25 Mandrake MDKSA-2003:096-1 2003-10-24 Mandrake MDKSA-2003:096 2003-09-26

Comments (none posted)

bind: cache poisoning

Package(s):	bind	CVE #(s):	CAN-2003-0914
Created:	November 26, 2003	Updated:	February 19, 2004
Description:	A cache poisoning vulnerability in BIND may be exploited causing a temporary denial of service until the bad record expires from the cache.
Alerts:	SCO Group CSSA-2004-003.0 2004-02-19 Debian DSA-409-1 2004-01-05 SuSE SuSE-SA:2003:047 2003-11-28 Trustix 2003-0044 2003-11-27 Immunix IMNX-2003-7+-024-01 2003-10-27 EnGarde ESA-20031126-031 2003-11-26

Comments (none posted)

CUPS: denial of service

Package(s):	CUPS	CVE #(s):	CAN-2003-0788
Created:	November 3, 2003	Updated:	March 4, 2004
Description:	Paul Mitcheson reported a situation where the CUPS Internet Printing Protocol (IPP) implementation in CUPS versions prior to 1.1.19 would get into a busy loop. This could result in a denial of service. In order to exploit this bug an attacker would need to have the ability to make a TCP connection to the IPP port (by default 631).
Alerts:	SCO Group CSSA-2004-012.0 2004-03-03 Conectiva CLA-2003:779 2003-11-07 Mandrake MDKSA-2003:104 2003-11-05 Red Hat RHSA-2003:275-01 2003-11-03

Comments (none posted)

ethereal: protocol dissector and other vulnerabilities

Package(s):	ethereal	CVE #(s):	CAN-2003-0925 CAN-2003-0926 CAN-2003-0927 CAN-2003-1012 CAN-2003-1013
Created:	December 19, 2003	Updated:	February 13, 2004
Description:	Serious issues have been discovered in two ethereal protocol dissectors. Both vulnerabilities will make the Ethereal application crash. The Q.931 vulnerability also affects Tethereal. It is not known if either vulnerability can be used to make Ethereal or Tethereal run arbitrary code. (CAN-2003-1012 and CAN-2003-1013)
Alerts:	Whitebox WBSA-2004:002-01 2004-02-12 Fedora-Legacy FLSA:1193 2004-01-31 Red Hat RHSA-2004:002-01 2004-01-05 Mandrake MDKSA-2004:002 2004-01-13 Conectiva CLA-2004:801 2004-01-07 Red Hat RHSA-2004:001-01 2004-01-07 Debian DSA-407-1 2004-01-05 Fedora FEDORA-2003-040 2003-12-18

Comments (none posted)

Filename disclosure vulnerability in fam

Package(s):	fam	CVE #(s):	CAN-2002-0875
Created:	August 19, 2002	Updated:	January 5, 2005
Description:	"fam" (file alteration monitor) watches files and directories for changes and lets interested applications know when something happens. This package has a flaw in its group handling that blocks some legitimate operations while, at the same time, exposing the names of files that should otherwise be invisible.
Alerts:	Red Hat RHSA-2005:005-01 2005-01-05 Debian DSA-154-1 2002-08-15

Comments (none posted)

fetchmail may crash on specially crafted message

Package(s):	fetchmail	CVE #(s):	CAN-2003-0792
Created:	October 17, 2003	Updated:	April 8, 2004
Description:	A bug was discovered in fetchmail 6.2.4 where a specially crafted email message can cause fetchmail to crash.
Alerts:	OpenPKG OpenPKG-SA-2004.012 2004-04-08 Gentoo 200403-10 2004-03-30 Netwosix NW-2004-0002 2004-02-20 SCO Group CSSA-2004-004.0 2004-02-19 Slackware SSA:2003-300-02 2003-10-22 Mandrake MDKSA-2003:101 2003-10-16

Comments (none posted)

fileutils/wu-ftpd: denial of service

Package(s):	fileutils	CVE #(s):	CAN-2003-0854
Created:	October 22, 2003	Updated:	March 2, 2004
Description:	There is, it seems, an integer overflow vulnerability in "ls" which can be exploited via wu-ftpd to create a denial of service situation. See this advisory from Georgi Guninski for details.
Alerts:	SCO Group CSSA-2004-006.0 2004-03-01 Trustix 2003-0042 2003-11-15 Mandrake MDKSA-2003:106 2003-11-12 Red Hat RHSA-2003:309-01 2003-11-03 Immunix IMNX-2003-7+-026-01 2003-10-31 Conectiva CLA-2003:771 2003-10-24 Conectiva CLA-2003:768 2003-10-22

Comments (none posted)

glibc: DNS stub resolvers contain buffer overflow vulnerability

Package(s):	glibc	CVE #(s):	CAN-2002-1146
Created:	November 7, 2002	Updated:	February 5, 2004
Description:	DNS stub resolvers from multiple vendors contain a buffer overflow vulnerability. The impact of this vulnerability appears to be limited to denial of service. (See CERT Vulnerability Note VU#738331) The BIND 4 and BIND 8.2.x stub resolver libraries, and other libraries such as glibc 2.2.5 and earlier, libc, and libresolv, uses the maximum buffer size instead of the actual size when processing a DNS response, which causes the stub resolvers to read past the actual boundary ("read buffer overflow"), allowing remote attackers to cause a denial of service (crash).
Alerts:	Mandrake MDKSA-2004:009 2004-02-04 Red Hat RHSA-2002:197-09 2002-11-06 Red Hat RHSA-2002:197-06 2002-10-03

Comments (none posted)

GnuPG: ElGamal signing keys compromised

Package(s):	gnupg	CVE #(s):	CAN-2003-0971
Created:	November 28, 2003	Updated:	March 3, 2004
Description:	A severe vulnerability was discovered in GnuPG by Phong Nguyen relating to ElGamal sign+encrypt keys. This email message from Werner Koch contains more information. "Phong Nguyen identified a severe bug in the way GnuPG creates and uses ElGamal keys for signing. This is a significant security failure which can lead to a compromise of almost all ElGamal keys used for signing. Note that this is a real world vulnerability which will reveal your private key within a few seconds."
Alerts:	SCO Group CSSA-2004-009.0 2004-03-02 Debian DSA-429-2 2004-02-13 Debian DSA-429-1 2004-01-26 Gentoo 200312-05 2003-12-12 Fedora FEDORA-2003-025 2003-12-10 Red Hat RHSA-2003:395-01 2003-12-10 Red Hat RHSA-2003:390-01 2003-12-10 Conectiva CLA-2003:798 2003-12-09 SuSE SuSE-SA:2003:048 2003-12-03 Mandrake MDKSA-2003:109 2003-11-28

Comments (3 posted)

gtkhtml: malformed messages cause crash

Package(s):	gtkhtml	CVE #(s):	CAN-2003-0133 CAN-2003-0541
Created:	April 14, 2003	Updated:	April 18, 2005
Description:	GtkHTML is the HTML rendering widget used by the Evolution mail reader. GtkHTML supplied with versions of Evolution prior to 1.2.4 contain a bug when handling HTML messages. Alan Cox discovered that certain malformed messages could cause the Evolution mail component to crash.
Alerts:	Debian DSA-710-1 2005-04-18 Mandrake MDKSA-2003:093 2003-09-18 Conectiva CLA-2003:737 2003-09-12 Red Hat RHSA-2003:264-01 2003-09-09 Mandrake MDKSA-2003:046 2003-04-15 Red Hat RHSA-2003:126-01 2003-04-14

Comments (none posted)

iproute: local denial of service

Package(s):	iproute net-tools	CVE #(s):	CAN-2003-0856
Created:	November 25, 2003	Updated:	December 14, 2004
Description:	The iproute utility is susceptible to spoofed netlink messages sent by local users, with the result that denial of service attacks are possible.
Alerts:	Mandrake MDKSA-2004:148 2004-12-13 Fedora FEDORA-2004-154 2004-06-03 Fedora FEDORA-2004-115 2004-05-11 Debian DSA-492-1 2004-04-18 Gentoo 200404-10 2004-04-09 Red Hat RHSA-2003:316-01 2003-11-24

Comments (none posted)

kernel: local root exploit in 2.4.22

Package(s):	kernel	CVE #(s):	CAN-2003-0961
Created:	December 1, 2003	Updated:	April 5, 2004
Description:	A vulnerability was discovered in the Linux kernel versions 2.4.22 and previous. A flaw in bounds checking in the do_brk() function can allow a local attacker to gain root privileges. This vulnerability is known to be exploitable. The 2.4.23 kernel contains the fix. For more details on how this vulnerability works, see this LWN article.
Alerts:	Debian DSA-475-1 2004-04-05 Debian DSA-470-1 2004-04-01 Debian DSA-442-1 2004-02-19 Debian DSA-433-1 2004-02-04 Debian DSA-423-1 2004-01-15 Red Hat RHSA-2003:368-01 2003-12-19 Conectiva CLA-2003:796 2003-12-05 Gentoo 200312-02 2003-12-04 SuSE SuSE-SA:2003:049 2003-12-04 Yellow Dog YDU-20031203-1 2003-12-03 Red Hat RHSA-2003:389-01 2003-12-01 Fedora FEDORA-2003-026 2003-12-02 Slackware SSA:2003-336-01 2003-12-01 Red Hat RHSA-2003:392-00 2003-12-01 Trustix 2003-0046 2003-12-01 Mandrake MDKSA-2003:110 2003-12-01 Debian DSA-403-1 2003-12-01

Comments (1 posted)

kernel-utils: setuid vulnerability

Package(s):	kernel-utils	CVE #(s):	CAN-2003-0019
Created:	February 7, 2003	Updated:	January 21, 2005
Description:	The kernel-utils package contains several utilities that can be used to control the kernel or machine hardware. In Red Hat Linux 8.0 this package contains user mode linux (UML) utilities. The uml_net utility in kernel-utils packages with Red Hat Linux 8.0 was incorrectly shipped setuid root. This could allow local users to control certain network interfaces, add and remove arp entries and routes, and put interfaces in and out of promiscuous mode. All users of the kernel-utils package should update to these packages that contain a version of uml_net that is not setuid root. Alternatively, as a work-around to this vulnerability issue the following command as root: chmod -s /usr/bin/uml_net
Alerts:	Red Hat RHSA-2003:056-08 2003-02-07

Comments (none posted)

lftp buffer overflows

Package(s):	lftp	CVE #(s):	CAN-2003-0963
Created:	December 15, 2003	Updated:	February 13, 2004
Description:	According to this advisory versions of lftp prior to 2.6.10 are vulnerable to two exploitable buffer overflow problems. Both occur when you connect to a web server with lftp using HTTP or HTTPS, and then use lftp's "ls" or "rels" commands on specially prepared directories on the web server.
Alerts:	Whitebox WBSA-2003:404-01 2003-12-17 Conectiva CLA-2004:800 2004-01-06 Debian DSA-406-1 2004-01-05 Gentoo 200312-07 2003-12-16 OpenPKG OpenPKG-SA-2003.053 2003-12-17 Red Hat RHSA-2003:404-01 2003-12-16 Red Hat RHSA-2003:403-01 2003-12-16 Mandrake MDKSA-2003:116 2003-12-15 Fedora FEDORA-2003-034 2003-12-15 SuSE SuSE-SA:2003:051 2003-12-15 Immunix IMNX-2003-73-002-01 2003-12-09 Slackware SSA:2003-346-01 2003-12-12

Comments (none posted)

libnids: remotely exploitable buffer overflow

Package(s):	libnids	CVE #(s):	CAN-2003-0850
Created:	October 29, 2003	Updated:	January 6, 2004
Description:	libnids (a NIDS plugin which emulates the Linux 2.0 IP stack) contains a buffer overflow vulnerability which can be exploited remotely. Version 1.18 fixes the problem.
Alerts:	Debian DSA-410-1 2004-01-05 Gentoo 200311-07 2003-11-22 Conectiva CLA-2003:773 2003-10-29

Comments (none posted)

libpng, libpng3: buffer overflow

Package(s):	libpng, libpng3	CVE #(s):	CAN-2002-1363
Created:	December 19, 2002	Updated:	July 14, 2004
Description:	Glenn Randers-Pehrson discovered a problem in connection with 16-bit samples from libpng, an interface for reading and writing PNG (Portable Network Graphics) format files. The starting offsets for the loops are calculated incorrectly which causes a buffer overrun beyond the beginning of the row buffer.
Alerts:	Gentoo 200407-06 2004-07-08 OpenPKG OpenPKG-SA-2004.030 2004-07-06 Mandrake MDKSA-2004:063 2004-06-29 Whitebox WBSA-2004:249-01 2004-06-21 Fedora FEDORA-2004-176 2004-06-18 Fedora FEDORA-2004-174 2004-06-18 Fedora FEDORA-2004-175 2004-06-18 Fedora FEDORA-2004-173 2004-06-18 Red Hat RHSA-2004:249-01 2004-06-18 Conectiva CLA-2003:564 2003-01-23 Mandrake MDKSA-2003:008 2003-01-20 OpenPKG OpenPKG-SA-2003.001 2003-01-15 Yellow Dog YDU-20030114-2 2002-01-14 SuSE SuSE-SA:2003:0004 2003-01-14 Red Hat RHSA-2003:006-06 2003-01-09 Debian DSA-213-1 2002-12-19

Comments (none posted)

mikmod: buffer overflow

Package(s):	mikmod	CVE #(s):	CAN-2003-0427
Created:	June 16, 2003	Updated:	June 16, 2005
Description:	Ingo Saitz discovered a bug in mikmod whereby a long filename inside an archive file can overflow a buffer when the archive is being read by mikmod.
Alerts:	Fedora FEDORA-2005-405 2005-06-16 Red Hat RHSA-2005:506-01 2005-06-13 Fedora FEDORA-2005-404 2005-06-09 Gentoo 200307-01 2003-07-02 Debian DSA-320-1 2003-06-13

Comments (none posted)

mpg123: heap overflow

Package(s):	mpg123	CVE #(s):	CAN-2003-0865
Created:	November 12, 2003	Updated:	February 19, 2004
Description:	Versions of mpg123 through 0.59s contain a heap overflow which may be exploited remotely (by a hostile server). See this advisory for details.
Alerts:	SCO Group CSSA-2004-002.0 2004-02-19 Debian DSA-435-1 2004-02-06 Conectiva CLA-2003:781 2003-11-12

Comments (none posted)

mplayer: remotely exploitable buffer overflow vulnerability

Package(s):	mplayer	CVE #(s):	CAN-2003-0835
Created:	September 29, 2003	Updated:	April 6, 2004
Description:	A remotely exploitable buffer overflow vulnerability was found in MPlayer. A malicious host can craft a harmful ASX header, and trick MPlayer into executing arbitrary code upon parsing that header. Read the full advisory for details.
Alerts:	Mandrake MDKSA-2004:026 2004-04-05 Gentoo 200403-13 2004-03-31 Conectiva CLA-2003:760 2003-10-06 Mandrake MDKSA-2003:097 2003-09-30 Gentoo 200309-15 2003-09-27

Comments (none posted)

Nessus NASL scripting engine security issues

Package(s):	nessus	CVE #(s):
Created:	May 27, 2003	Updated:	August 12, 2004
Description:	Some some vulnerabilities exsist in the Nessus NASL scripting engine. To exploit these flaws, an attacker would need to have a valid Nessus account as well as the ability to upload arbitrary Nessus plugins in the Nessus server (this option is disabled by default) or he/she would need to trick a user somehow into running a specially crafted nasl script. Read the full advisory for additional information.
Alerts:	Gentoo 200305-10 2003-05-27

Comments (none posted)

Net-SNMP: security bugs in versions before 5.0.9

Package(s):	Net-SNMP	CVE #(s):	CAN-2003-0935
Created:	December 2, 2003	Updated:	February 13, 2004
Description:	The Net-SNMP project includes various Simple Network Management Protocol (SNMP) tools. A security issue in Net-SNMP versions before 5.0.9 could allow an existing user/community to gain access to data in MIB objects that were explicitly excluded from their view. Version 5.0.9 of Net-SNMP is not vulnerable to this issue. In addition, Net-SNMP 5.0.9 fixes a number of other minor bugs.
Alerts:	Whitebox WBSA-2004:023-01 2004-02-12 Red Hat RHSA-2004:023-01 2004-01-15 Mandrake MDKSA-2003:115 2003-12-11 Red Hat RHSA-2003:335-01 2003-12-02

Comments (none posted)

nfs-utils xlog() off-by-one bug

Package(s):	nfs-utils	CVE #(s):	CAN-2003-0252
Created:	July 14, 2003	Updated:	March 8, 2004
Description:	Linux NFS utils package contains remotely exploitable off-by-one bug. A local or remote attacker could exploit this vulnerability by sending specially crafted request to rpc.mountd daemon. See this BugTraq post for more details.
Alerts:	Trustix TSLSA-2004-0009 2004-03-05 SCO Group CSSA-2003-037.0 2003-11-17 Conectiva CLA-2003:700 2003-07-22 Mandrake MDKSA-2003:076 2003-07-21 Gentoo 200307-07 2003-07-19 Yellow Dog YDU-20030718-1 2003-07-18 Slackware SSA:2003-195-01b 2003-07-15 Immunix IMNX-2003-7+-018-01 2003-07-14 SuSE SuSE-SA:2003:031 2003-07-15 Slackware SSA:2003-195-01 2003-07-14 Debian DSA-349-1 2003-07-14 Red Hat RHSA-2003:206-01 2003-07-14

Comments (none posted)

openssh: timing attack leads to information disclosure

Package(s):	openssh	CVE #(s):	CAN-2003-0190
Created:	May 2, 2003	Updated:	November 30, 2004
Description:	From the advisory: "During a pen-test we stumbled across a nasty bug in OpenSSH-portable with PAM support enabled (via the --with-pam configure script switch). This bug allows a remote attacker to identify valid users on vulnerable systems, through a simple timing attack. The vulnerability is easy to exploit and may have high severity, if combined with poor password policies and other security problems that allow local privilege escalation."
Alerts:	Ubuntu USN-34-1 2004-11-30 OpenPKG OpenPKG-SA-2003.035 2003-08-06 Red Hat RHSA-2003:222-01 2003-07-29 Gentoo 200305-02 2003-05-13 Gentoo 200305-01 2002-03-05

Comments (1 posted)

postfix: denial of service vulnerabilities

Package(s):	postfix	CVE #(s):	CAN-2003-0468 CAN-2003-0540
Created:	August 5, 2003	Updated:	May 27, 2004
Description:	The postfix MTA, versions through 1.1.12 (but not 2.0) is subject to two remotely exploitable denial of service vulnerabilities; see this advisory from Michal Zalewski for details.
Alerts:	Mandrake MDKA-2004:028 2004-05-26 Trustix 2003-0029 2003-08-04 Mandrake MDKSA-2003:081 2003-08-04 EnGarde ESA-20030804-019 2003-08-04 Conectiva CLA-2003:717 2003-08-04 SuSE SuSE-SA:2003:033 2003-08-04 Red Hat RHSA-2003:251-01 2003-08-04 Debian DSA-363-1 2003-08-03

Comments (none posted)

proftpd: remote root shell

Package(s):	proftpd	CVE #(s):	CAN-2003-0831
Created:	September 24, 2003	Updated:	January 2, 2004
Description:	The ASCII translation mechanism in ProFTPD 1.2.8 contains a vulnerability which will provide a remote attacker with a root shell - if the attacker is able to download a specially-crafted file. See this ISS advisory for more information.
Alerts:	Mandrake MDKSA-2003:095-1 2003-12-31 Conectiva CLA-2003:750 2003-09-29 Gentoo 200309-16 2003-09-28 Trustix 2003-0037 2003-09-27 Mandrake MDKSA-2003:095 2003-09-26 OpenPKG OpenPKG-SA-2003.043 2003-09-25 Slackware SSA:2003-259-02 2003-09-23

Comments (2 posted)

rsync - remotely exploitable heap overflow

Package(s):	rsync	CVE #(s):	CAN-2003-0962
Created:	December 4, 2003	Updated:	March 3, 2004
Description:	An advisory has gone out warning of a remotely exploitable heap overflow vulnerability in rsync versions 2.5.6 and prior. If you are running an rsync server, you will want to apply a distributor patch or upgrade to 2.5.7 in the near future.
Alerts:	SCO Group CSSA-2004-010.0 2004-03-02 Immunix IMNX-2003-73-001-01 2003-12-05 Mandrake MDKSA-2003:111 2003-12-04 Red Hat RHSA-2003:399-01 2003-12-04 Red Hat RHSA-2003:398-01 2003-12-04 Fedora FEDORA-2003-030 2003-12-04 Conectiva CLA-2003:794 2003-12-04 Gentoo 200312-03 2003-12-04 EnGarde ESA-20031204-032 2003-12-04 Debian DSA-404-1 2003-12-04 OpenPKG OpenPKG-SA-2003.051 2003-12-04 SuSE SuSE-SA:2003:050 2003-12-04 Trustix 2003-0048 2003-12-04 Slackware SSA:2003-337-01 2003-12-03

Comments (none posted)

Multiple-use vulnerability in Safe.pm

Package(s):	Safe.pm	CVE #(s):	CAN-2002-1323
Created:	October 9, 2002	Updated:	February 20, 2004
Description:	usePerl has a description of a vulnerability in the Safe.pm Perl module. It seems that if a Safe compartment is used more than once, it ceases to be safe. The problem is fixed in Safe 2.08.
Alerts:	SCO Group CSSA-2004-007.0 2004-02-20 Gentoo 200212-6 2002-12-20 Trustix 2002-0087 2002-12-19 OpenPKG OpenPKG-SA-2002.014 2002-12-16 Debian DSA-208-1 2002-12-12

Comments (none posted)

sane-backends: several vulnerabilities

Package(s):	sane-backends	CVE #(s):	CAN-2003-0773 CAN-2003-0774 CAN-2003-0775 CAN-2003-0776 CAN-2003-0777 CAN-2003-0778
Created:	September 11, 2003	Updated:	February 20, 2004
Description:	Alexander Hvostov, Julien Blache and Aurelien Jarno discovered several security-related problems in the sane-backends package, which contains an API library for scanners including a scanning daemon (in the package libsane) that can be remotely exploited. These problems allow a remote attacker to cause a segfault fault and/or consume arbitrary amounts of memory. The attack is successful, even if the attacker's computer isn't listed in saned.conf. You are only vulnerable if you actually run saned e.g. in xinetd or inetd. If the entries in the configuration file of xinetd or inetd respectively are commented out or do not exist, you are safe. Try "telnet localhost 6566" on the server that may run saned. If you get "connection refused" saned is not running and you are safe. The Common Vulnerabilities and Exposures project identifies the following problems: CAN-2003-0773: saned checks the identity (IP address) of the remote host only after the first communication took place (SANE_NET_INIT). So everyone can send that RPC, even if the remote host is not allowed to scan (not listed in saned.conf). CAN-2003-0774: saned lacks error checking nearly everywhere in the code. So connection drops are detected very late. If the drop of the connection isn't detected, the access to the internal wire buffer leaves the limits of the allocated memory. So random memory "after" the wire buffer is read which will be followed by a segmentation fault. CAN-2003-0775: If saned expects strings, it mallocs the memory necessary to store the complete string after it receives the size of the string. If the connection was dropped before transmitting the size, malloc will reserve an arbitrary size of memory. Depending on that size and the amount of memory available either malloc fails (->saned quits nicely) or a huge amount of memory is allocated. Swapping and OOM measures may occur depending on the kernel. CAN-2003-0776: saned doesn't check the validity of the RPC numbers it gets before getting the parameters. CAN-2003-0777: If debug messages are enabled and a connection is dropped, non-null-terminated strings may be printed and segmentation faults may occur. CAN-2003-0778: It's possible to allocate an arbitrary amount of memory on the server running saned even if the connection isn't dropped. At the moment this can not easily be fixed according to the author. Better limit the total amount of memory saned may use (ulimit).
Alerts:	SCO Group CSSA-2004-005.0 2004-02-19 SuSE SuSE-SA:2003:046 2003-11-18 Conectiva CLA-2003:769 2003-10-22 Mandrake MDKSA-2003:099 2003-10-09 Red Hat RHSA-2003:278-01 2003-10-07 Debian DSA-379-1 2003-09-11

Comments (none posted)

screen: privilege escalation

Package(s):	screen	CVE #(s):	CAN-2003-0972
Created:	November 28, 2003	Updated:	March 3, 2004
Description:	According to this advisory a buffer overflow in GNU screen allows privilege escalation for local users. Usually screen is installed either setgid-utmp or setuid-root. It also has some potential for remote attacks or getting control of another user's screen. The problem is that you have to transfer around 2-3 gigabytes of data to user's screen to exploit this vulnerability. 4.0.1, 3.9.15 and older versions are vulnerable.
Alerts:	SCO Group CSSA-2004-011.0 2004-03-02 Fedora-Legacy FLSA:1187 2004-01-26 Conectiva CLA-2004:809 2004-01-20 Debian DSA-408-1 2004-01-05 Mandrake MDKSA-2003:113 2003-12-08 OpenPKG OpenPKG-SA-2003.050 2003-11-28

Comments (none posted)

File overwrite vulnerability in tar and unzip

Package(s):	tar unzip	CVE #(s):	CAN-2001-1267 CAN-2001-1268 CAN-2001-1269 CAN-2002-0399
Created:	October 1, 2002	Updated:	April 10, 2006
Description:	The tar utility does not properly filter file names containing "../", meaning that a hostile archive can, if unpacked by an unsuspecting user, overwrite any file that is writable by that user. GNU tar versions 1.13.19 and earlier are vulnerable; unzip through version 5.42 has the same vulnerability.
Alerts:	Fedora-Legacy FLSA:183571-1 2006-04-04 Red Hat RHSA-2006:0195-01 2006-02-21 Conectiva CLA-2002:538 2002-10-29 Mandrake MDKSA-2002:066 2002-10-10 Mandrake MDKSA-2002:065 2002-10-10 EnGarde ESA-20021003-022 2002-10-03 Gentoo unzip-20021001 2002-10-01 Gentoo tar-20021001 2002-10-01 Red Hat RHSA-2002:096-24 2002-09-18

Comments (1 posted)

Multiple vendor telnetd vulnerability

Package(s):	telnet Telnet netkit-telnet-ssl kerberos telnetd netkit-telnet nkitb/nkitserv/telnetd krb5	CVE #(s):
Created:	May 21, 2002	Updated:	October 5, 2004
Description:	This vulnerability, originally thought to be confined to BSD-derived systems, was first covered in the July 26th Security Summary. It is now known that Linux telnet daemons are vulnerable as well.
Alerts:	Gentoo 200410-03 2004-10-05 Yellow Dog YDU-20010810-2 2001-08-10 Yellow Dog YDU-20010810-1 2001-08-10 SuSE SuSE-SA:2001:029 2001-09-03 Slackware sl-997726350 2001-08-09 Red Hat RHSA-2001:100-02 2001-08-09 Red Hat RHSA-2001:099-09 2002-02-07 Red Hat RHSA-2001:099-06 2001-08-09 Progeny PROGENY-SA-2001-27 2001-08-14 Mandrake MDKSA-2001:093 2001-12-17 Mandrake MDKSA-2001:068 2001-08-13 HP HPSBTL0202-023 2002-02-12 Debian DSA-075-2 2001-08-14 Debian DSA-075-1 2001-08-14 Conectiva CLA-2001:413 2001-08-24 SCO Group CSSA-2001-030.0 2001-08-10

Comments (none posted)

vim - modeline vulnerability

Package(s):	vim	CVE #(s):	CAN-2002-1377
Created:	January 16, 2003	Updated:	February 10, 2004
Description:	VIM allows a user to set the modeline differently for each edited text file by placing special comments in the files. Georgi Guninski found that these comments can be carefully crafted in order to call external programs. This could allow an attacker to create a text file such that when it is opened arbitrary commands are executed.
Alerts:	Conectiva CLA-2004:812 2004-02-10 Mandrake MDKSA-2003:012 2003-02-03 Yellow Dog YDU-20030127-3 2003-01-27 Gentoo 200301-13 2003-01-22 OpenPKG OpenPKG-SA-2003.003 2003-01-21 Red Hat RHSA-2002:297-17 2003-01-15

Comments (4 posted)

zebra: denial of service vulnerability

Package(s):	zebra	CVE #(s):	CAN-2003-0795 CAN-2003-0858
Created:	November 13, 2003	Updated:	January 7, 2004
Description:	Zebra an open source implementation of TCP/IP routing software. Jonny Robertson reported that Zebra can be remotely crashed if a Zebra password has been enabled and a remote attacker can connect to the Zebra telnet management port. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0795 to this issue. Herbert Xu reported that Zebra can accept spoofed messages sent on the kernel netlink interface by other users on the local machine. This could lead to a local denial of service attack. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0858 to this issue.
Alerts:	Debian DSA-415-1 2004-01-06 OpenPKG OpenPKG-SA-2003.049 2003-11-25 Conectiva CLA-2003:786 2003-11-20 Red Hat RHSA-2003:307-01 2003-11-13

Comments (none posted)

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