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Ubuntu Security Notice USN-1225-1

Ubuntu Security Notice USN-1225-1
Posted Oct 4, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1225-1 - Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, local, root
systems | linux, ubuntu
advisories | CVE-2011-1776, CVE-2011-2213, CVE-2011-2497, CVE-2011-2699, CVE-2011-2928, CVE-2011-3191
SHA-256 | b1f7dfa9aac3262694f9d2d9d05907998c01f0a91e58587143172a3404102b77

Ubuntu Security Notice USN-1225-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1225-1
October 04, 2011

linux vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 8.04 LTS

Summary:

Multiple kernel flaws have been fixed.

Software Description:
- linux: Linux kernel

Details:

Timo Warns discovered that the EFI GUID partition table was not correctly
parsed. A physically local attacker that could insert mountable devices
could exploit this to crash the system or possibly gain root privileges.
(CVE-2011-1776)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not
correctly validate certain requests. A local attacker could exploit this to
consume CPU resources, leading to a denial of service. (CVE-2011-2213)

Dan Rosenberg discovered that the Bluetooth stack incorrectly handled
certain L2CAP requests. If a system was using Bluetooth, a remote attacker
could send specially crafted traffic to crash the system or gain root
privileges. (CVE-2011-2497)

Fernando Gont discovered that the IPv6 stack used predictable fragment
identification numbers. A remote attacker could exploit this to exhaust
network resources, leading to a denial of service. (CVE-2011-2699)

Time Warns discovered that long symlinks were incorrectly handled on Be
filesystems. A local attacker could exploit this with a malformed Be
filesystem and crash the system, leading to a denial of service.
(CVE-2011-2928)

Darren Lavender discovered that the CIFS client incorrectly handled certain
large values. A remote attacker with a malicious server could exploit this
to crash the system or possibly execute arbitrary code as the root user.
(CVE-2011-3191)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 8.04 LTS:
linux-image-2.6.24-29-386 2.6.24-29.94
linux-image-2.6.24-29-generic 2.6.24-29.94
linux-image-2.6.24-29-hppa32 2.6.24-29.94
linux-image-2.6.24-29-hppa64 2.6.24-29.94
linux-image-2.6.24-29-itanium 2.6.24-29.94
linux-image-2.6.24-29-lpia 2.6.24-29.94
linux-image-2.6.24-29-lpiacompat 2.6.24-29.94
linux-image-2.6.24-29-mckinley 2.6.24-29.94
linux-image-2.6.24-29-openvz 2.6.24-29.94
linux-image-2.6.24-29-powerpc 2.6.24-29.94
linux-image-2.6.24-29-powerpc-smp 2.6.24-29.94
linux-image-2.6.24-29-powerpc64-smp 2.6.24-29.94
linux-image-2.6.24-29-rt 2.6.24-29.94
linux-image-2.6.24-29-server 2.6.24-29.94
linux-image-2.6.24-29-sparc64 2.6.24-29.94
linux-image-2.6.24-29-sparc64-smp 2.6.24-29.94
linux-image-2.6.24-29-virtual 2.6.24-29.94
linux-image-2.6.24-29-xen 2.6.24-29.94

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1225-1
CVE-2011-1776, CVE-2011-2213, CVE-2011-2497, CVE-2011-2699,
CVE-2011-2928, CVE-2011-3191

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.24-29.94


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