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Test ID:1.3.6.1.4.1.25623.1.0.70653
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2012:0007
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2012:0007.

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

This update fixes the following security issues:

* A buffer overflow flaw was found in the way the Linux kernel's XFS file
system implementation handled links with overly long path names. A local,
unprivileged user could use this flaw to cause a denial of service or
escalate their privileges by mounting a specially-crafted disk.
(CVE-2011-4077, Important)

* The fix for CVE-2011-2482 provided by RHSA-2011:1212 introduced a
regression: on systems that do not have Security-Enhanced Linux (SELinux)
in Enforcing mode, a socket lock race could occur between sctp_rcv() and
sctp_accept(). A remote attacker could use this flaw to cause a denial of
service. By default, SELinux runs in Enforcing mode on Red Hat Enterprise
Linux 5. (CVE-2011-4348, Important)

* The proc file system could allow a local, unprivileged user to obtain
sensitive information or possibly cause integrity issues. (CVE-2011-1020,
Moderate)

* A missing validation flaw was found in the Linux kernel's m_stop()
implementation. A local, unprivileged user could use this flaw to trigger a
denial of service. (CVE-2011-3637, Moderate)

* A flaw was found in the Linux kernel's Journaling Block Device (JBD).
A local attacker could use this flaw to crash the system by mounting a
specially-crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate)

* A flaw was found in the Linux kernel's encode_share_access()
implementation. A local, unprivileged user could use this flaw to trigger a
denial of service by creating a regular file on an NFSv4 (Network File
System version 4) file system via mknod(). (CVE-2011-4324, Moderate)

* A flaw was found in the Linux kernel's NFS implementation. A local,
unprivileged user could use this flaw to cause a denial of service.
(CVE-2011-4325, Moderate)

* A missing boundary check was found in the Linux kernel's HFS file system
implementation. A local attacker could use this flaw to cause a denial of
service or escalate their privileges by mounting a specially-crafted disk.
(CVE-2011-4330, Moderate)

Red Hat would like to thank Kees Cook for reporting CVE-2011-1020, and
Clement Lecigne for reporting CVE-2011-4330.

This update also fixes several bugs and adds one enhancement. Documentation
for these changes will be available shortly from the Technical Notes
document linked to in the References section.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues, and fix the bugs and add the enhancement
noted in the Technical Notes. The system must be rebooted for this update
to take effect.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2012-0007.html

Risk factor : High

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-1020
BugTraq ID: 46567
http://www.securityfocus.com/bid/46567
http://seclists.org/fulldisclosure/2011/Jan/421
http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/
https://lkml.org/lkml/2011/2/7/414
https://lkml.org/lkml/2011/2/7/474
https://lkml.org/lkml/2011/2/7/368
https://lkml.org/lkml/2011/2/7/404
https://lkml.org/lkml/2011/2/7/466
https://lkml.org/lkml/2011/2/10/21
https://lkml.org/lkml/2011/2/9/417
http://openwall.com/lists/oss-security/2011/02/24/18
http://openwall.com/lists/oss-security/2011/02/25/2
http://secunia.com/advisories/43496
http://securityreason.com/securityalert/8107
XForce ISS Database: kernel-procpid-security-bypass(65693)
https://exchange.xforce.ibmcloud.com/vulnerabilities/65693
Common Vulnerability Exposure (CVE) ID: CVE-2011-3637
http://www.openwall.com/lists/oss-security/2012/02/06/1
Common Vulnerability Exposure (CVE) ID: CVE-2011-4077
HPdes Security Advisory: HPSBGN02970
http://marc.info/?l=bugtraq&m=139447903326211&w=2
http://xorl.wordpress.com/2011/12/07/cve-2011-4077-linux-kernel-xfs-readlink-memory-corruption/
http://www.openwall.com/lists/oss-security/2011/10/26/1
http://www.openwall.com/lists/oss-security/2011/10/26/3
http://oss.sgi.com/archives/xfs/2011-10/msg00345.html
http://secunia.com/advisories/48964
Common Vulnerability Exposure (CVE) ID: CVE-2011-4132
BugTraq ID: 50663
http://www.securityfocus.com/bid/50663
http://xorl.wordpress.com/2011/12/08/cve-2011-4132-linux-kernel-jbdjbd2-local-dos/
http://www.openwall.com/lists/oss-security/2011/11/11/6
http://www.openwall.com/lists/oss-security/2011/11/13/4
http://securitytracker.com/id?1026325
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
SuSE Security Announcement: SUSE-SU-2015:0812 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
Common Vulnerability Exposure (CVE) ID: CVE-2011-4324
http://www.openwall.com/lists/oss-security/2012/02/06/3
Common Vulnerability Exposure (CVE) ID: CVE-2011-4325
BugTraq ID: 51366
http://www.securityfocus.com/bid/51366
XForce ISS Database: linux-kernel-nfs-dos(72297)
https://exchange.xforce.ibmcloud.com/vulnerabilities/72297
Common Vulnerability Exposure (CVE) ID: CVE-2011-4330
BugTraq ID: 50750
http://www.securityfocus.com/bid/50750
https://lkml.org/lkml/2011/11/9/303
http://www.openwall.com/lists/oss-security/2011/11/21/14
http://www.openwall.com/lists/oss-security/2011/11/21/5
Common Vulnerability Exposure (CVE) ID: CVE-2011-4348
http://www.openwall.com/lists/oss-security/2012/03/05/2
Common Vulnerability Exposure (CVE) ID: CVE-2011-2482
http://www.openwall.com/lists/oss-security/2011/08/30/1
RedHat Security Advisories: RHSA-2011:1212
http://rhn.redhat.com/errata/RHSA-2011-1212.html
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