Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-1776-1)

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


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

A flaw was reported in the permission checks done by the Linux kernel
for /dev/cpu/*/msr. A local root user with all capabilities dropped
could exploit this flaw to execute code with full root capabilities.
(CVE-2013-0268)

A flaw was discovered in the Linux kernels handling of memory ranges
with PROT_NONE when transparent hugepages are in use. An unprivileged
local user could exploit this flaw to cause a denial of service (crash
the system). (CVE-2013-0309)

A flaw was discovered on the Linux kernel's VFAT filesystem driver
when a disk is mounted with the utf8 option (this is the default on
Ubuntu). On a system where disks/images can be auto-mounted or a FAT
filesystem is mounted an unprivileged user can exploit the flaw to
gain root privileges. (CVE-2013-1773).

Solution :

Update the affected linux-image-2.6.32-351-ec2 package.

Risk factor :

Medium / CVSS Base Score : 6.2
(CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 4.9
(CVSS2#E:POC/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 65667 ()

Bugtraq ID: 57838
58046
58200

CVE ID: CVE-2013-0268
CVE-2013-0309
CVE-2013-1773