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ID de Prueba:1.3.6.1.4.1.25623.1.0.881811
Categoría:CentOS Local Security Checks
Título:CentOS Update for kernel CESA-2013:1449 centos5
Resumen:The remote host is missing an update for the 'kernel'; package(s) announced via the referenced advisory.
Descripción:Summary:
The remote host is missing an update for the 'kernel'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.

* 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 is 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)

* An information leak flaw was found in the way Linux kernel's device
mapper subsystem, under certain conditions, interpreted data written to
snapshot block devices. An attacker could use this flaw to read data from
disk blocks in free space, which are normally inaccessible. (CVE-2013-4299,
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)

* An information leak flaw was found in the way Xen hypervisor emulated the
OUTS instruction for 64-bit paravirtualized guests. A privileged guest user
could use this flaw to leak hypervisor stack memory to the guest.
(CVE-2013-4368, Moderate)

Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, Stephan
Mueller for reporting CVE-2013-4345, and the Xen project for reporting
CVE-2013-4368.

This update also fixes the following bug:

* A bug in the GFS2 code prevented glock work queues from freeing
glock-related memory while the glock memory shrinker repeatedly queued a
large number of demote requests, for example when performing a simultaneous
backup of several live GFS2 volumes with a large file count. As a
consequence, the glock work queues became overloaded which resulted in a
high CPU usage and the GFS2 file systems being unresponsive for a
significant amount of time. A patch has been applied to alleviate this
problem by calling the yield() function after scheduling a certain amount
of tasks on the glock work queues. The problem can now occur only with
extremely high work loads. (BZ#1014714)

All kernel users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. The system must be
rebooted for this update to take effect.

Affected Software/OS:
kernel on CentOS 5

Solution:
Please install the updated packages.

CVSS Score:
6.0

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

Referencia Cruzada: Common Vulnerability Exposure (CVE) ID: CVE-2013-0343
RHSA-2013:1449
http://rhn.redhat.com/errata/RHSA-2013-1449.html
RHSA-2013:1490
http://rhn.redhat.com/errata/RHSA-2013-1490.html
RHSA-2013:1645
http://rhn.redhat.com/errata/RHSA-2013-1645.html
USN-1976-1
http://www.ubuntu.com/usn/USN-1976-1
USN-1977-1
http://www.ubuntu.com/usn/USN-1977-1
USN-2019-1
http://www.ubuntu.com/usn/USN-2019-1
USN-2020-1
http://www.ubuntu.com/usn/USN-2020-1
USN-2021-1
http://www.ubuntu.com/usn/USN-2021-1
USN-2022-1
http://www.ubuntu.com/usn/USN-2022-1
USN-2023-1
http://www.ubuntu.com/usn/USN-2023-1
USN-2024-1
http://www.ubuntu.com/usn/USN-2024-1
USN-2038-1
http://www.ubuntu.com/usn/USN-2038-1
USN-2039-1
http://www.ubuntu.com/usn/USN-2039-1
USN-2050-1
http://www.ubuntu.com/usn/USN-2050-1
[oss-security] 20121205 Re: Linux kernel handling of IPv6 temporary addresses
http://openwall.com/lists/oss-security/2012/12/05/4
[oss-security] 20130116 Re: Linux kernel handling of IPv6 temporary addresses
http://openwall.com/lists/oss-security/2013/01/16/7
[oss-security] 20130121 Re: Linux kernel handling of IPv6 temporary addresses
http://openwall.com/lists/oss-security/2013/01/21/11
[oss-security] 20130222 Re: Linux kernel handling of IPv6 temporary addresses
http://www.openwall.com/lists/oss-security/2013/02/22/6
https://bugzilla.redhat.com/show_bug.cgi?id=914664
openSUSE-SU-2014:0204
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
Common Vulnerability Exposure (CVE) ID: CVE-2013-4299
RHSA-2013:1436
http://rhn.redhat.com/errata/RHSA-2013-1436.html
RHSA-2013:1450
http://rhn.redhat.com/errata/RHSA-2013-1450.html
RHSA-2013:1460
http://rhn.redhat.com/errata/RHSA-2013-1460.html
RHSA-2013:1519
http://rhn.redhat.com/errata/RHSA-2013-1519.html
RHSA-2013:1520
http://rhn.redhat.com/errata/RHSA-2013-1520.html
RHSA-2013:1783
http://rhn.redhat.com/errata/RHSA-2013-1783.html
RHSA-2013:1860
http://rhn.redhat.com/errata/RHSA-2013-1860.html
SUSE-SU-2015:0652
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
SUSE-SU-2015:0812
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
USN-2015-1
http://www.ubuntu.com/usn/USN-2015-1
USN-2016-1
http://www.ubuntu.com/usn/USN-2016-1
USN-2040-1
http://www.ubuntu.com/usn/USN-2040-1
USN-2041-1
http://www.ubuntu.com/usn/USN-2041-1
USN-2042-1
http://www.ubuntu.com/usn/USN-2042-1
USN-2043-1
http://www.ubuntu.com/usn/USN-2043-1
USN-2044-1
http://www.ubuntu.com/usn/USN-2044-1
USN-2045-1
http://www.ubuntu.com/usn/USN-2045-1
USN-2046-1
http://www.ubuntu.com/usn/USN-2046-1
USN-2049-1
http://www.ubuntu.com/usn/USN-2049-1
USN-2066-1
http://www.ubuntu.com/usn/USN-2066-1
USN-2067-1
http://www.ubuntu.com/usn/USN-2067-1
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9c6a182649f4259db704ae15a91ac820e63b0ca
https://bugzilla.redhat.com/show_bug.cgi?id=1004233
https://github.com/torvalds/linux/commit/e9c6a182649f4259db704ae15a91ac820e63b0ca
Common Vulnerability Exposure (CVE) ID: CVE-2013-4345
62740
http://www.securityfocus.com/bid/62740
USN-2064-1
http://www.ubuntu.com/usn/USN-2064-1
USN-2065-1
http://www.ubuntu.com/usn/USN-2065-1
USN-2068-1
http://www.ubuntu.com/usn/USN-2068-1
USN-2070-1
http://www.ubuntu.com/usn/USN-2070-1
USN-2071-1
http://www.ubuntu.com/usn/USN-2071-1
USN-2072-1
http://www.ubuntu.com/usn/USN-2072-1
USN-2074-1
http://www.ubuntu.com/usn/USN-2074-1
USN-2075-1
http://www.ubuntu.com/usn/USN-2075-1
USN-2076-1
http://www.ubuntu.com/usn/USN-2076-1
USN-2109-1
http://www.ubuntu.com/usn/USN-2109-1
USN-2110-1
http://www.ubuntu.com/usn/USN-2110-1
USN-2158-1
http://www.ubuntu.com/usn/USN-2158-1
[linux-crypto] 20130917 [PATCH] ansi_cprng: Fix off by one error in non-block size request
http://marc.info/?l=linux-crypto-vger&m=137942122902845&w=2
https://bugzilla.redhat.com/show_bug.cgi?id=1007690
Common Vulnerability Exposure (CVE) ID: CVE-2013-4368
DSA-3006
http://www.debian.org/security/2014/dsa-3006
GLSA-201407-03
http://security.gentoo.org/glsa/glsa-201407-03.xml
SUSE-SU-2014:0411
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
SUSE-SU-2014:0446
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
SUSE-SU-2014:0470
http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
[oss-security] 20131010 Xen Security Advisory 67 (CVE-2013-4368) - Information leak through outs instruction emulation
http://www.openwall.com/lists/oss-security/2013/10/10/10
openSUSE-SU-2013:1636
http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
xen-cve20134368-info-disc(87799)
https://exchange.xforce.ibmcloud.com/vulnerabilities/87799
CopyrightCopyright (C) 2013 Greenbone AG

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