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Ubuntu Security Notice USN-1939-1

Ubuntu Security Notice USN-1939-1
Posted Sep 6, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1939-1 - Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that allows for privilege escalation. A local user could exploit this flaw to run commands as root when using the perf tool. Michael S. Tsirkin discovered a flaw in how the Linux kernel's KVM subsystem allocates memory slots for the guest's address space. A local user could exploit this flaw to gain system privileges or obtain sensitive information from kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2013-1060, CVE-2013-1943, CVE-2013-2206, CVE-2013-4162, CVE-2013-1060, CVE-2013-1943, CVE-2013-2206, CVE-2013-4162
MD5 | 1339a0ee671d7ff2795f4ee0c938c6c5

Ubuntu Security Notice USN-1939-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1939-1
September 06, 2013

linux 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: Linux kernel

Details:

Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that
allows for privilege escalation. A local user could exploit this flaw to
run commands as root when using the perf tool.
(CVE-2013-1060)

Michael S. Tsirkin discovered a flaw in how the Linux kernel's KVM
subsystem allocates memory slots for the guest's address space. A local
user could exploit this flaw to gain system privileges or obtain sensitive
information from kernel memory. (CVE-2013-1943)

A flaw was discovered in the SCTP (stream control transfer protocol)
network protocol's handling of duplicate cookies in the Linux kernel. A
remote attacker could exploit this flaw to cause a denial of service
(system crash) on another remote user querying the SCTP connection.
(CVE-2013-2206)

Hannes Frederic Sowa discovered a flaw in setsockopt UDP_CORK option in the
Linux kernel's IPv6 stack. A local user could exploit this flaw to cause a
denial of service (system crash). (CVE-2013-4162)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-51-386 2.6.32-51.113
linux-image-2.6.32-51-generic 2.6.32-51.113
linux-image-2.6.32-51-generic-pae 2.6.32-51.113
linux-image-2.6.32-51-ia64 2.6.32-51.113
linux-image-2.6.32-51-lpia 2.6.32-51.113
linux-image-2.6.32-51-powerpc 2.6.32-51.113
linux-image-2.6.32-51-powerpc-smp 2.6.32-51.113
linux-image-2.6.32-51-powerpc64-smp 2.6.32-51.113
linux-image-2.6.32-51-preempt 2.6.32-51.113
linux-image-2.6.32-51-server 2.6.32-51.113
linux-image-2.6.32-51-sparc64 2.6.32-51.113
linux-image-2.6.32-51-sparc64-smp 2.6.32-51.113
linux-image-2.6.32-51-versatile 2.6.32-51.113
linux-image-2.6.32-51-virtual 2.6.32-51.113

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-1939-1
CVE-2013-1060, CVE-2013-1943, CVE-2013-2206, CVE-2013-4162

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-51.113


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