Ubuntu 11.10 : linux vulnerability (USN-1336-1)

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 :

Clement Lecigne discovered a bug in the HFS filesystem. A local
attacker could exploit this to cause a kernel oops. (CVE-2011-2203)

A bug was discovered in the XFS filesystem's handling of pathnames. A
local attacker could exploit this to crash the system, leading to a
denial of service, or gain root privileges. (CVE-2011-4077)

A flaw was found in how the Linux kernel handles user-defined key
types. An unprivileged local user could exploit this to crash the
system. (CVE-2011-4110)

A flaw was found in the Journaling Block Device (JBD). A local
attacker able to mount ext3 or ext4 file systems could exploit this to
crash the system, leading to a denial of service. (CVE-2011-4132)

Clement Lecigne discovered a bug in the HFS file system bounds
checking. When a malformed HFS file system is mounted a local user
could crash the system or gain root privileges. (CVE-2011-4330)

Chen Haogang discovered an integer overflow that could result in
memory corruption. A local unprivileged user could use this to crash
the system. (CVE-2012-0044)

Jüri Aedla discovered that the kernel incorrectly handled
/proc/<pid>/mem permissions. A local attacker could exploit this and
gain root privileges. (CVE-2012-0056).

Solution :

Update the affected 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 : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 57660 ()

Bugtraq ID: 51625

CVE ID: CVE-2011-2203
CVE-2011-4077
CVE-2011-4110
CVE-2011-4132
CVE-2011-4330
CVE-2012-0044
CVE-2012-0056