| Description: | 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:
* It was found that the Xen hypervisor implementation did not perform
range checking on the guest provided values in multiple hypercalls. A
privileged guest user could use this flaw to trigger long loops, leading
to a denial of service (Xen hypervisor hang). (CVE-2012-5515, Moderate)
* It was found that when running a 32-bit binary that uses a large number
of shared libraries, one of the libraries would always be loaded at a
predictable address in memory. An attacker could use this flaw to bypass
the Address Space Layout Randomization (ASLR) security feature.
(CVE-2012-1568, Low)
* A flaw was found in the way the Linux kernel's IPv6 implementation
handled overlapping, fragmented IPv6 packets. A remote attacker could
potentially use this flaw to bypass protection mechanisms (such as a
firewall or intrusion detection system (IDS)) when sending network packets
to a target system. (CVE-2012-4444, Low)
Red Hat would like to thank the Xen project for reporting CVE-2012-5515,
and Antonios Atlasis working with Beyond Security's SecuriTeam Secure
Disclosure program and Loganaden Velvindron of AFRINIC for reporting
CVE-2012-4444.
This update also fixes several bugs. Space precludes documenting all of
these changes in this advisory. Documentation for these changes will be
available shortly from the Red Hat Enterprise Linux 5.9 Technical Notes
document linked to in the References section.
Users should 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:
5.0
CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:N
|
