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Test ID:1.3.6.1.4.1.25623.1.0.840785
Category:Ubuntu Local Security Checks
Title:Ubuntu Update for linux USN-1243-1
Summary:Ubuntu Update for Linux kernel vulnerabilities USN-1243-1
Description:Summary:
Ubuntu Update for Linux kernel vulnerabilities USN-1243-1

Vulnerability Insight:
It was discovered that the security fix for CVE-2010-4250 introduced a
regression. A remote attacker could exploit this to crash the system,
leading to a denial of service. (CVE-2011-1479)

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)

Vasiliy Kulikov discovered that /proc/PID/io did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2495)

It was discovered that the EXT4 filesystem contained multiple off-by-one
flaws. A local attacker could exploit this to crash the system, leading to
a denial of service. (CVE-2011-2695)

Christian Ohm discovered that the perf command looks for configuration
files in the current directory. If a privileged user were tricked into
running perf in a directory containing a malicious configuration file, an
attacker could run arbitrary commands and possibly gain privileges.
(CVE-2011-2905)

Vasiliy Kulikov discovered that the Comedi driver did not correctly clear
memory. A local attacker could exploit this to read kernel stack memory,
leading to a loss of privacy. (CVE-2011-2909)

Dan Kaminsky discovered that the kernel incorrectly handled random sequence
number generation. An attacker could use this flaw to possibly predict
sequence numbers and inject packets. (CVE-2011-3188)

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that had
no prefixpaths. A local attacker with access to a CIFS partition could
exploit this to crash the system, leading to a denial of service.
(CVE-2011-3363)

Affected Software/OS:
linux on Ubuntu 10.10

Solution:
Please Install the Updated Packages.

CVSS Score:
6.4

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-4250
http://www.openwall.com/lists/oss-security/2010/11/24/11
Common Vulnerability Exposure (CVE) ID: CVE-2011-1479
http://www.openwall.com/lists/oss-security/2011/04/11/1
Common Vulnerability Exposure (CVE) ID: CVE-2011-2494
http://www.openwall.com/lists/oss-security/2011/06/27/1
http://secunia.com/advisories/48898
SuSE Security Announcement: SUSE-SU-2012:0554 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
Common Vulnerability Exposure (CVE) ID: CVE-2011-2495
RedHat Security Advisories: RHSA-2011:1212
http://rhn.redhat.com/errata/RHSA-2011-1212.html
Common Vulnerability Exposure (CVE) ID: CVE-2011-2695
http://www.spinics.net/lists/linux-ext4/msg25697.html
http://www.openwall.com/lists/oss-security/2011/07/15/7
http://www.openwall.com/lists/oss-security/2011/07/15/8
http://secunia.com/advisories/45193
Common Vulnerability Exposure (CVE) ID: CVE-2011-2905
http://www.openwall.com/lists/oss-security/2011/08/09/6
Common Vulnerability Exposure (CVE) ID: CVE-2011-2909
http://www.openwall.com/lists/oss-security/2011/08/12/1
Common Vulnerability Exposure (CVE) ID: CVE-2011-3188
HPdes Security Advisory: HPSBGN02970
http://marc.info/?l=bugtraq&m=139447903326211&w=2
http://www.openwall.com/lists/oss-security/2011/08/23/2
Common Vulnerability Exposure (CVE) ID: CVE-2011-3363
http://www.openwall.com/lists/oss-security/2011/09/14/12
CopyrightCopyright (C) 2011 Greenbone Networks GmbH

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