Scientific Linux Security Update : kernel on SL6.x i386/x86_64

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

This update fixes the following security issues :

- A flaw was found in the way the Linux kernel's IPv6
implementation handled certain UDP packets when the UDP
Fragmentation Offload (UFO) feature was enabled. A
remote attacker could use this flaw to crash the system
or, potentially, escalate their privileges on the
system. (CVE-2013-4387, Important)

- A flaw was found in the way the Linux kernel handled the
creation of temporary IPv6 addresses. If the IPv6
privacy extension was enabled
(/proc/sys/net/ipv6/conf/eth0/use_tempaddr set to '2'),
an attacker on the local network could disable IPv6
temporary address generation, leading to a potential
information disclosure. (CVE-2013-0343, Moderate)

- A flaw was found in the way the Linux kernel handled HID
(Human Interface Device) reports with an out-of-bounds
Report ID. An attacker with physical access to the
system could use this flaw to crash the system or,
potentially, escalate their privileges on the system.
(CVE-2013-2888, Moderate)

- An off-by-one flaw was found in the way the ANSI CPRNG
implementation in the Linux kernel processed non-block
size aligned requests. This could lead to random numbers
being generated with less bits of entropy than expected
when ANSI CPRNG was used. (CVE-2013-4345, Moderate)

- It was found that the fix for CVE-2012-2375 released via
SLSA-2012:1580 accidentally removed a check for
small-sized result buffers. A local, unprivileged user
with access to an NFSv4 mount with ACL support could use
this flaw to crash the system or, potentially, escalate
their privileges on the system . (CVE-2013-4591,
Moderate)

- A flaw was found in the way IOMMU memory mappings were
handled when moving memory slots. A malicious user on a
KVM host who has the ability to assign a device to a
guest could use this flaw to crash the host.
(CVE-2013-4592, Moderate)

- Heap-based buffer overflow flaws were found in the way
the Zeroplus and Pantherlord/GreenAsia game controllers
handled HID reports. An attacker with physical access to
the system could use these flaws to crash the system or,
potentially, escalate their privileges on the system.
(CVE-2013-2889, CVE-2013-2892, Moderate)

- Two information leak flaws were found in the logical
link control (LLC) implementation in the Linux kernel. A
local, unprivileged user could use these flaws to leak
kernel stack memory to user space. (CVE-2012-6542,
CVE-2013-3231, Low)

- A heap-based buffer overflow in the way the tg3 Ethernet
driver parsed the vital product data (VPD) of devices
could allow an attacker with physical access to a system
to cause a denial of service or, potentially, escalate
their privileges. (CVE-2013-1929, Low)

- Information leak flaws in the Linux kernel could allow a
privileged, local user to leak kernel memory to user
space. (CVE-2012-6545, CVE-2013-1928, CVE-2013-2164,
CVE-2013-2234, Low)

- A format string flaw was found in the Linux kernel's
block layer. A privileged, local user could potentially
use this flaw to escalate their privileges to kernel
level (ring0). (CVE-2013-2851, Low)

The system must be rebooted for this update to take effect.

See also :

http://www.nessus.org/u?9ea222cb

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.2
(CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C)