Security

From the Novell bugzilla entry:

A security flaw was found in the way Clutter, an open source software library for creating rich graphical user interfaces, used to manage translation of hierarchy events in certain circumstances (when underlying device disappeared, causing XIQueryDevice query to throw an error). Physically proximate attackers could use this flaw for example to obtain unauthorized access to gnome-shell session right after system resume (due to gnome-shell crash).

Multiple vulnerabilities have been been fixed in the Drupal content management framework, resulting in information disclosure, insufficient validation, cross-site scripting and cross-site request forgery.

From the Debian advisory:

It was discovered that ejabberd, a Jabber/XMPP server, uses SSLv2 and weak ciphers for communication, which are considered insecure. The software offers no runtime configuration options to disable these. This update disables the use of SSLv2 and weak ciphers.

A Debian bug report indicated that Links does not properly verify SSL certificates. If you visit a web site with an expired SSL certificate, Links will only display "SSL error" without any indication as to what the error was. This, in and of itself, is not a flaw however when testing, I found that when you go to a site with a valid SSL certificate, but for a different hostname (for example, if you go to https://alias.foo.com which might be a CNAME or a proxy for https://foo.com) Links will connect without any errors or warnings. Doing the same in a browser like Google Chrome, however, reports "You attempted to reach alias.foo.com, but instead you actually reached a server identifying itself as foo.com." and allows you to either proceed or not, before loading the site.

From the Mageia advisory:

Special crafted input data may be used to cause a denial of service against GPG. GPG can be forced to recursively parse certain parts of OpenPGP messages ad infinitum (CVE-2013-4402).

Use-after-free vulnerability in International Components for Unicode (ICU), as used in Google Chrome before 30.0.1599.66 and other products, allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors.

From the Red Hat bugzilla entry:

Linux kernel built with the IPv6 protocol(CONFIG_IPV6) support and an Ethernet driver(ex. virtio-net) which has a UDP Fragmentation Offload(UFO) feature ON is vulnerable to NULL pointer dereference flaw. It could occur while sending a large messages over an IPv6 connection. Though the crash occurs while sending messages, it could be triggered by a remote client by requesting larger data from a server.

An unprivileged user/program could use this flaw to crash the kernel, resulting in DoS.

Robert Matthews discovered that the Apache FCGID module, a FastCGI implementation for Apache HTTP Server, fails to perform adequate boundary checks on user-supplied input. This may allow a remote attacker to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.

From the Red Hat advisory:

Two heap-based buffer overflow flaws were found in the way libtar handled certain archives. If a user were tricked into expanding a specially-crafted archive, it could cause the libtar executable or an application using libtar to crash or, potentially, execute arbitrary code. (CVE-2013-4397)

Note: This issue only affected 32-bit builds of libtar.

From the Novell bugzilla entry:

Bug 894370 - (CVE-2013-1739) Avoid uninitialized data read in the event of a decryption failure.

[ NSS bug 894370 is closed at the time of this writing. ]

From the Fedora adivsory:

Fix reflected XSS with run parameter.

The researchers Cyril Arnaud and Pierre-Alain Fouque investigated the PolarSSL RSA implementation and discovered a bias in the implementation of the Montgomery multiplication that we used. For which they then show that it can be used to mount an attack on the RSA key. Although their test attack is done on a local system, there seems to be enough indication that this can properly be performed from a remote system as well.

From the quagga-dev bug report:

While processing the received LSAs, we crash with gdb backtrace points to memcpy called from new_msg_lsa_change_notify. By code review, I see that we memcpy into a buffer with a length we learned from the input, not governed by the length of the available buffer. In my patch, I suggest that we govern the memcpy by the length of the available buffer.

Buffer overflow in the SCSI implementation in QEMU, as used in Xen, when a SCSI controller has more than 256 attached devices, allows local users to gain privileges via a small transfer buffer in a REPORT LUNS command.

Multiple security issues in systemd have been discovered by Sebastian Krahmer and Florian Weimer: Insecure interaction with DBUS could lead to the bypass of Policykit restrictions and privilege escalation or denial of service through an integer overflow in journald and missing input sanitising in the processing of X keyboard extension (XKB) files.

From the Debian advisory:

Markus Pieton and Vytautas Paulikas discovered that the embedded video and audio player in the TYPO3 web content management system is [susceptible] to cross-site-scripting.

Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a (1) port or (2) memory mapped I/O write or (3) other unspecified operations related to addresses without associated memory. (CVE-2013-4355)

The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction. (CVE-2013-4361)

Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.