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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 Red Hat
Enterprise Linux 2.1 are now available.
The Linux kernel handles the basic functions of the operating system.
This advisory includes fixes for the following security issues:
iSEC Security Research discovered a VMA handling flaw in the uselib(2)
system call of the Linux kernel. A local user could make use of this
flaw to gain elevated (root) rights. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CVE-2004-1235 to
iSEC Security Research discovered a flaw in the page fault handler code
that could lead to local users gaining elevated (root) rights on
multiprocessor machines. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2005-0001 to this issue.
iSEC Security Research and Georgi Guninski independently discovered a flaw
in the scm_send function in the auxiliary message layer. A local user
could create a carefully crafted auxiliary message which could cause a
denial of service (system hang). The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CVE-2004-1016 to this issue.
Kirill Korotaev found a flaw in load_elf_binary affecting kernels prior to
2.4.26. A local user could create a carefully crafted binary in such a
way that it would cause a denial of service (system crash). The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2004-1234 to this issue.
These packages also fix issues in the io_edgeport driver (CVE-2004-1017), a
memory leak in ip_options_get (CVE-2004-1335), and missing VM_IO
flags in some drivers (CVE-2004-1057).
A recent Internet Draft by Fernando Gont recommended that ICMP Source
Quench messages be ignored by hosts. A patch to ignore these messages is
All Red Hat Enterprise Linux 2.1 users are advised to upgrade their
kernels to the packages associated with their machine architectures
and configurations as listed in this erratum.
Solution : http://rhn.redhat.com/errata/RHSA-2005-016.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2005 Tenable Network Security
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