Ubuntu 12.04 LTS : linux vulnerabilities (USN-1448-1)

Ubuntu Security Notice (C) 2012-2013 Canonical, Inc. / NASL script (C) 2012-2013 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine)
virtual cpu setup. An unprivileged local user could exploit this flaw
to crash the system leading to a denial of service. (CVE-2012-1601)

Steve Grubb reported a flaw with Linux fscaps (file system base
capabilities) when used to increase the permissions of a process. For
application on which fscaps are in use a local attacker can disable
address space randomization to make attacking the process with raised
privileges easier. (CVE-2012-2123)

A flaw was found in how the Linux kernel passed the replacement
session keyring to a child process. An unprivileged local user could
exploit this flaw to cause a denial of service (panic).
(CVE-2012-2745).

Solution :

Update the affected linux-image-3.2.0-24-generic,
linux-image-3.2.0-24-generic-pae and / or linux-image-3.2.0-24-virtual
packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 59226 ()

Bugtraq ID: 53166

CVE ID: CVE-2012-1601
CVE-2012-2123
CVE-2012-2745