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Test Kennung:1.3.6.1.4.1.25623.1.0.70468
Kategorie:Red Hat Local Security Checks
Titel:RedHat Security Advisory RHSA-2011:1465
Zusammenfassung:NOSUMMARY
Beschreibung:Description:
The remote host is missing updates announced in
advisory RHSA-2011:1465.

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

This update fixes the following security issues:

* IPv6 fragment identification value generation could allow a remote
attacker to disrupt a target system's networking, preventing legitimate
users from accessing its services. (CVE-2011-2699, Important)

* A signedness issue was found in the Linux kernel's CIFS (Common Internet
File System) implementation. A malicious CIFS server could send a
specially-crafted response to a directory read request that would result in
a denial of service or privilege escalation on a system that has a CIFS
share mounted. (CVE-2011-3191, Important)

* A flaw was found in the way the Linux kernel handled fragmented IPv6 UDP
datagrams over the bridge with UDP Fragmentation Offload (UFO)
functionality on. A remote attacker could use this flaw to cause a denial
of service. (CVE-2011-4326, Important)

* The way IPv4 and IPv6 protocol sequence numbers and fragment IDs were
generated could allow a man-in-the-middle attacker to inject packets and
possibly hijack connections. Protocol sequence numbers and fragment IDs are
now more random. (CVE-2011-3188, Moderate)

* A buffer overflow flaw was found in the Linux kernel's FUSE (Filesystem
in Userspace) implementation. A local user in the fuse group who has access
to mount a FUSE file system could use this flaw to cause a denial of
service. (CVE-2011-3353, Moderate)

* A flaw was found in the b43 driver in the Linux kernel. If a system had
an active wireless interface that uses the b43 driver, an attacker able to
send a specially-crafted frame to that interface could cause a denial of
service. (CVE-2011-3359, Moderate)

* A flaw was found in the way CIFS shares with DFS referrals at their root
were handled. An attacker on the local network who is able to deploy a
malicious CIFS server could create a CIFS network share that, when mounted,
would cause the client system to crash. (CVE-2011-3363, Moderate)

* A flaw was found in the way the Linux kernel handled VLAN 0 frames with
the priority tag set. When using certain network drivers, an attacker on
the local network could use this flaw to cause a denial of service.
(CVE-2011-3593, Moderate)

* A flaw in the way memory containing security-related data was handled in
tpm_read() could allow a local, unprivileged user to read the results of a
previously run TPM command. (CVE-2011-1162, Low)

* A heap overflow flaw was found in the Linux kernel's EFI GUID Partition
Table (GPT) implementation. A local attacker could use this flaw to cause
a denial of service by mounting a disk that contains specially-crafted
partition tables. (CVE-2011-1577, Low)

* The I/O statistics from the taskstats subsystem could be read without
any restrictions. A local, unprivileged user could use this flaw to gather
confidential information, such as the length of a password used in a
process. (CVE-2011-2494, Low)

* It was found that the perf tool, a part of the Linux kernel's Performance
Events implementation, could load its configuration file from the current
working directory. If a local user with access to the perf tool were
tricked into running perf in a directory that contains a specially-crafted
configuration file, it could cause perf to overwrite arbitrary files and
directories accessible to that user. (CVE-2011-2905, Low)

Red Hat would like to thank Fernando Gont for reporting CVE-2011-2699

Darren Lavender for reporting CVE-2011-3191
Dan Kaminsky for reporting
CVE-2011-3188
Yogesh Sharma for reporting CVE-2011-3363
Gideon Naim for
reporting CVE-2011-3593
Peter Huewe for reporting CVE-2011-1162
Timo
Warns for reporting CVE-2011-1577
and Vasiliy Kulikov of Openwall for
reporting CVE-2011-2494.

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

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-2011-1465.html

Risk factor : High

Querverweis: Common Vulnerability Exposure (CVE) ID: CVE-2011-1162
BugTraq ID: 50764
http://www.securityfocus.com/bid/50764
Common Vulnerability Exposure (CVE) ID: CVE-2011-1577
BugTraq ID: 47343
http://www.securityfocus.com/bid/47343
Bugtraq: 20110413 [PRE-SA-2011-03] Denial-of-service vulnerability in EFI partition handling code of the Linux kernel (Google Search)
http://www.securityfocus.com/archive/1/517477/100/0/threaded
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.html
http://www.spinics.net/lists/mm-commits/msg83274.html
http://openwall.com/lists/oss-security/2011/04/12/17
http://openwall.com/lists/oss-security/2011/04/13/1
RedHat Security Advisories: RHSA-2011:0833
http://rhn.redhat.com/errata/RHSA-2011-0833.html
http://securitytracker.com/id?1025355
http://securityreason.com/securityalert/8238
XForce ISS Database: kernel-guid-dos(66773)
https://exchange.xforce.ibmcloud.com/vulnerabilities/66773
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-2011-2699
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.openwall.com/lists/oss-security/2011/07/20/5
http://www.securitytracker.com/id?1027274
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-2011-3188
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-2011-3191
http://www.openwall.com/lists/oss-security/2011/08/24/2
Common Vulnerability Exposure (CVE) ID: CVE-2011-3353
http://www.openwall.com/lists/oss-security/2011/09/09/6
Common Vulnerability Exposure (CVE) ID: CVE-2011-3359
http://www.openwall.com/lists/oss-security/2011/09/14/2
Common Vulnerability Exposure (CVE) ID: CVE-2011-3363
http://www.openwall.com/lists/oss-security/2011/09/14/12
Common Vulnerability Exposure (CVE) ID: CVE-2011-3593
http://www.openwall.com/lists/oss-security/2012/03/05/3
Common Vulnerability Exposure (CVE) ID: CVE-2011-4326
BugTraq ID: 50751
http://www.securityfocus.com/bid/50751
http://www.openwall.com/lists/oss-security/2011/11/21/10
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