Ubuntu Security Notice 1610-1 - Pablo Neira Ayuso discovered a flaw in the credentials of netlink messages. An unprivileged local attacker could exploit this by getting a netlink based service, that relies on netlink credentials, to perform privileged actions.
697880beb07592581d786acced25e12402f8ea81e2020a74c4da5adcc3af8003
============================================================================
Ubuntu Security Notice USN-1610-1
October 12, 2012
linux vulnerability
============================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
The system could be made to perform privileged actions as an administrator.
Software Description:
- linux: Linux kernel
Details:
Pablo Neira Ayuso discovered a flaw in the credentials of netlink messages.
An unprivileged local attacker could exploit this by getting a netlink
based service, that relies on netlink credentials, to perform privileged
actions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.2.0-32-generic 3.2.0-32.51
linux-image-3.2.0-32-generic-pae 3.2.0-32.51
linux-image-3.2.0-32-highbank 3.2.0-32.51
linux-image-3.2.0-32-omap 3.2.0-32.51
linux-image-3.2.0-32-powerpc-smp 3.2.0-32.51
linux-image-3.2.0-32-powerpc64-smp 3.2.0-32.51
linux-image-3.2.0-32-virtual 3.2.0-32.51
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.
References:
http://www.ubuntu.com/usn/usn-1610-1
CVE-2012-3520
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-32.51