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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Check for the version of the kernel packages
Detailed Explanation for this Vulnerability Assessment
Updated kernel packages that fix several security issues in the Red Hat
Enterprise Linux 3 kernel are now available.
This security advisory has been rated as having important security impact
by the Red Hat Security Response Team.
The Linux kernel handles the basic functions of the operating system.
These new kernel packages contain fixes for the security issues described
* a flaw in the IPC shared-memory implementation that permited a local user
to cause a denial of service (deadlock) that resulted in freezing the
system (CVE-2006-4342, Important)
* an information leak in the copy_from_user() implementation on s390 and
s390x platforms that permited a local user to read arbitrary kernel memory
* a flaw in the ATM subsystem affecting systems with installed ATM
hardware and configured ATM support that permited a remote user to cause
a denial of service (panic) by accessing socket buffer memory after it
has been freed (CVE-2006-4997, Moderate)
* a directory traversal vulnerability in smbfs that permited a local user
to escape chroot restrictions for an SMB-mounted filesystem via "..\"
sequences (CVE-2006-1864, Moderate)
* a flaw in the mprotect system call that permited enabling write permission
for a read-only attachment of shared memory (CVE-2006-2071, Moderate)
* a flaw in the DVD handling of the CDROM driver that could be used
together with a custom built USB device to gain root rights
In addition to the security issues described above, a bug fix for a clock
skew problem (which could lead to unintended keyboard repeat under X11)
was also included. The problem only occurred when running the 32-bit x86
kernel on 64-bit dual-core x86_64 hardware.
Note: The kernel-unsupported package contains various drivers and modules
that are unsupported and therefore might contain security problems that
have not been addressed.
All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels
to the packages associated with their machine architecture and
configurations as listed in this erratum.
Solution : http://rhn.redhat.com/errata/RHSA-2006-0710.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2006 Tenable Network Security
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