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Ubuntu Security Notice USN-1829-1

Ubuntu Security Notice USN-1829-1
Posted May 16, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1829-1 - Mathias Krause discovered an information leak in the Linux kernel's ISO 9660 CDROM file system driver. A local user could exploit this flaw to examine some of the kernel's heap memory. Mathias Krause discovered a flaw in xfrm_user in the Linux kernel. A local attacker with NET_ADMIN capability could potentially exploit this flaw to escalate privileges. A buffer overflow was discovered in the Linux Kernel's USB subsystem for devices reporting the cdc-wdm class. A specially crafted USB device when plugged-in could cause a denial of service (system crash) or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-6549, CVE-2013-1826, CVE-2013-1860, CVE-2013-1928, CVE-2013-2634, CVE-2012-6549, CVE-2013-1826, CVE-2013-1860, CVE-2013-1928, CVE-2013-2634
MD5 | ff3a0e9be566d64fd676635ebcfc874b

Ubuntu Security Notice USN-1829-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1829-1
May 16, 2013

linux-ec2 vulnerabilities
==========================================================================

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

- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-ec2: Linux kernel for EC2

Details:

Mathias Krause discovered an information leak in the Linux kernel's ISO
9660 CDROM file system driver. A local user could exploit this flaw to
examine some of the kernel's heap memory. (CVE-2012-6549)

Mathias Krause discovered a flaw in xfrm_user in the Linux kernel. A local
attacker with NET_ADMIN capability could potentially exploit this flaw to
escalate privileges. (CVE-2013-1826)

A buffer overflow was discovered in the Linux Kernel's USB subsystem for
devices reporting the cdc-wdm class. A specially crafted USB device when
plugged-in could cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2013-1860)

An information leak was discovered in the Linux kernel's /dev/dvb device. A
local user could exploit this flaw to obtain sensitive information from the
kernel's stack memory. (CVE-2013-1928)

An information leak in the Linux kernel's dcb netlink interface was
discovered. A local user could obtain sensitive information by examining
kernel stack memory. (CVE-2013-2634)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-352-ec2 2.6.32-352.65

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-1829-1
CVE-2012-6549, CVE-2013-1826, CVE-2013-1860, CVE-2013-1928,
CVE-2013-2634

Package Information:
https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-352.65

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