| 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.
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, ...
Description truncated, please see the referenced URL(s) for more information.
Affected Software/OS:
kernel on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)
Solution:
Please Install the Updated Packages.
CVSS Score:
8.3
CVSS Vector:
AV:A/AC:L/Au:N/C:C/I:C/A:C
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