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Security

Brief items

Security through obsolescence (Register)

Robin Miller considers the virtues of mature software.

Here's an interesting way to secure an Internet-connected computer against intruders: Make sure the operating system and software it runs are so old that current hacking tools won't work on it.

An interesting read.

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The New Debian Security Build Infrastructure

Woody release manager Anthony Towns shares some information about the new security infrastructure. This new infrastructure is a critical component of the woody release.

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Super-Secure Linux, Inch by Inch (Wired)

Wired News covers the National Security Agency's Security-Enhanced linux (SElinux). "NSA's Wagner says that SELinux's adoption rate "has exceeded our original expectations. This release has also caused developers of non-Linux systems to consider incorporating similar controls based upon our earlier prototypes.""

If you haven't seem it already, this week's LWN.net leading item is about SELinux and patents.

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Complex Linux virus warning (vnunet)

Vnunet covers cross-platform viruses, which might be able to infect Linux systems. "Although the virus was not the first of its kind to infect both Windows and Linux machines, it apparently moved virus-writing techniques "yet another step up the scale of complexity"."

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New viruses aim to cross multi platforms (ZDNet)

Robert Lemos worries that although the Simile.D cross-platform virus isn't much of a threat,the techniques it uses may be bad news. Simile.D is one of the few, so far, viruses with the "ability to jump from Windows to Linux and back again."

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Support discontinued for SuSE 6.4

After Monday, June 17 2002, SuSE will will not provide security fixes for SuSE Linux 6.4 any more. With SuSE 8.0 in release, the announcement isn't a surprise.

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Security reports

Security Advisory For Versions of Bugzilla 2.14 Prior To 2.14.2, 2.16 Prior To 2.16rc2

The Bugzilla team has issued a security advisory encouaging all Bugzilla installations to upgrade to the latest versions of Bugzilla released Jun 8th, 2002, 2.14.2 and 2.16rc2. " Various security issues of varying importance have been fixed in Bugzilla 2.14.2. Most of these were fixed already in 2.16rc1, a few were not."

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Remote vulnerability in Mozilla 1.0

Tom Vogt has reported a frustratring problem with Mozilla 1.0 and earlier. A maliciously crafted stylesheet can cause the X server to crash or consume memory until stopped with a kill -9. Either way, it takes the desktop with it when it goes.

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CBMS: XSS and SQL Injection holes

Ulf Harnhammar reports that CBMS "is littered with XSS (Cross-site Scripting) and SQL Injection holes."

CBMS is a full featured client/billing system designed from the ground up to cater specifically to hosting providers. The softwares is a PHP script package which uses MySQL. Notable features include automated invoicing, client search, multiple customizable packages for clients and a client viewable real time invoice.

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CGIscript.net - csNews.cgi has multiple vulnerabilities

Steve Gustin has reported multiple vulnerabilities in the csNews.cgi script from CGIscript.net "Contact vendor for updated version, only allow completely trusted users to access the application, disable access to .style and *db files through Apache .htaccess files."

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AlienForm2 CGI script arbitrary file read/write vulnerability

Nick Cleaton reports that the AlienForm2 form to email gateway has a flaw which, subject to file permissions, allows an attacker to read and modify "any file on the server." A suggested fix is included.

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Format string vulnerabilities in mmmail and mmftpd

Guillaume Pelat has reported format string vulnerabilities in mmmail 0.0.13 and mmftpd 0.0.7. Updated versions which fix both problems are available. Mmmail supplies SMTP and POP3 daemons using MySQ and other features. Mmftpd is a secure FTP server

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New vulnerabilities

Ethereal buffer overflow, infinite loop and memory management vulnerabilities

Package(s):ethereal CVE #(s):CAN-2002-0012 CAN-2002-0013 CAN-2002-0353 CAN-2002-0401 CAN-2002-0402 CAN-2002-0403 CAN-2002-0404
Created:June 12, 2002 Updated:October 27, 2002
Description: Ethereal 0.9.4 was released on May 19, 2002 fixing four potential security issues in Ethereal 0.9.3:
  • The SMB dissector could potentially dereference a NULL pointer in two cases.
  • The X11 dissector could potentially overflow a buffer while parsing keysyms.
  • The DNS dissector could go into an infinite loop while reading a malformed packet.
  • The GIOP dissector could potentially allocate large amounts of memory.

No known exploits exist "in the wild" at the present time for any of these issues.

Ethereal 0.9.2 has several packet handling vulnerabilities that are best avoided by upgrading to 0.9.4. The PROTOS test suite found some flaws in SNMP and LDAP protocols support. Malformed packets could also crash ethereal 0.9.2 due to a ASN.1 zero-length g_malloc problem. The zlib "double free" vulnerability was addressed by the updates for that bug from many distributors.
Alerts:
SCO Group CSSA-2002-037.0 ethereal 2002-10-24
Conectiva CLA-2002:505 ethereal 2002-07-04
Yellow Dog YDU-20020606-7 ethereal 2002-06-06
Red Hat RHSA-2002:088-06 ethereal 2002-06-04
Eridani ERISA-2002:023 ethereal 2002-06-06

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LPRng accepts jobs from any host.

Package(s):LPRng CVE #(s):CAN-2002-0378
Created:June 12, 2002 Updated:October 31, 2002
Description: Matthew Caron pointed out that LPRng's default configuration accepts job submissions from any host.

This could be an especially annoying vulnerability for adminstrators with systems exposed to the general public.

Alerts:
SuSE SuSE-SA:2002:040 lprng, 2002-10-31
Mandrake MDKSA-2002:042 LPRng 2002-07-04
Red Hat RHSA-2002:089-07 LPRng 2002-06-09

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Resources

Using tcpserver with Mandrake Linux (MandrakeSecure.net )

Tcpserver is a secure replacement for inetd. This article is of interest to anyone who wants to use tcpserver on Linux allthough the it is, of course, specific to Mandrake Linux.

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Linux Security Week and Advisory Watch

The June 10th Linux Security Week and June 7th Linux Advisory Watch Newsletters from LinuxSecurity.com are available.

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Pine 4.44 privacy patch

A patch is available for Pine 4.44 that closes user name and id leaks due to automatic header line insertion. The patch is intended for use by "help desks and other role accounts."

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Next Generation Secure Remote Log Servers over TCP (LinuxSecurity.com)

Eric "Loki" Hines has written a "Comprehensive Guide to Building Encrypted, Secure Remote Syslog-ng Servers with the Snort Intrusion Detection System."

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Events

HiverCon 2002 Announcement

HiverCon 2002 is scheduled for 26 and 27 November, 2002 in Dublin Ireland. The call for papers closes 6 September 2002.

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Black Hat 2002 Speakers Announced

The event is being held 31 July through 1 August 2002 in Las Vegas, Nevada, USA. " Richard Clarke, Special Advisor to President Bush for Cyberspace Security, will be one of the keynotes headlining the event."

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Upcoming Security Events

Date Event Location
June 17 - 19, 2002NetSec 2002San Fransisco, California, USA
June 17 - 19, 20023rd Annual Information Assurance Workshop(United States Military Academy)West Point, New York
June 24 - 28, 200214th Annual Computer Security Incident Handling Conference(Hilton Waikoloa Village)Hawaii
June 24 - 26, 200215th IEEE Computer Security Foundations Workshop(Keltic Lodge, Cape Breton)Nova Scotia, Canada
June 28 - 29, 2002Edinburgh Financial Cryptography Engineering 2002Edinburgh, Scotland
July 31 - August 1, 2002Black Hat Briefings 2002(Caesars Palace Hotel and Resort)Las Vegas, NV, USA
August 2 - 4, 2002Defcon(Alexis Park Hotel and Resort)Las Vegas, Nevada
August 5 - 9, 200211th USENIX Security SymposiumSan Francisco, CA, USA
August 6 - 9, 2002CERT Conference 2002Omaha, Nebraska, USA

For additional security-related events, included training courses (which we don't list above) and events further in the future, check out Security Focus' calendar, one of the primary resources we use for building the above list. To submit an event directly to us, please send a plain-text message to lwn@lwn.net.

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Page editor: Dennis Tenney
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