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Ubuntu Security Notice USN-2282-1

Ubuntu Security Notice USN-2282-1
Posted Jul 17, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2282-1 - Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol (PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user could exploit this flaw to gain administrative privileges. A flaw was discovered in the Linux kernel's audit subsystem when auditing certain syscalls. A local attacker could exploit this flaw to obtain potentially sensitive single-bit values from kernel memory or cause a denial of service (OOPS). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2014-3917, CVE-2014-4608, CVE-2014-4943
SHA-256 | 7576ac5f9418fb22970fae92bda3060de5c7f880fb96a5b9f8bf23edeaa5a089

Ubuntu Security Notice USN-2282-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2282-1
July 16, 2014

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:

Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol
(PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user
could exploit this flaw to gain administrative privileges. (CVE-2014-4943)

A flaw was discovered in the Linux kernel's audit subsystem when auditing
certain syscalls. A local attacker could exploit this flaw to obtain
potentially sensitive single-bit values from kernel memory or cause a
denial of service (OOPS). (CVE-2014-3917)

Don Bailey discovered a flaw in the LZO decompress algorithm used by the
Linux kernel. An attacker could exploit this flaw to cause a denial of
service (memory corruption or OOPS). (CVE-2014-4608)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-64-386 2.6.32-64.128
linux-image-2.6.32-64-generic 2.6.32-64.128
linux-image-2.6.32-64-generic-pae 2.6.32-64.128
linux-image-2.6.32-64-ia64 2.6.32-64.128
linux-image-2.6.32-64-lpia 2.6.32-64.128
linux-image-2.6.32-64-powerpc 2.6.32-64.128
linux-image-2.6.32-64-powerpc-smp 2.6.32-64.128
linux-image-2.6.32-64-powerpc64-smp 2.6.32-64.128
linux-image-2.6.32-64-preempt 2.6.32-64.128
linux-image-2.6.32-64-server 2.6.32-64.128
linux-image-2.6.32-64-sparc64 2.6.32-64.128
linux-image-2.6.32-64-sparc64-smp 2.6.32-64.128
linux-image-2.6.32-64-versatile 2.6.32-64.128
linux-image-2.6.32-64-virtual 2.6.32-64.128

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-2282-1
CVE-2014-3917, CVE-2014-4608, CVE-2014-4943

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-64.128
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