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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 fileutils packages
Detailed Explanation for this Vulnerability Assessment
Updated fileutils packages that close a potential denial of service
vulnerability are now available.
The fileutils package contains several basic system utilities. One of
these utilities is the "ls" program, which is used to list information
about files and directories.
Georgi Guninski discovered a memory starvation denial of service
vulnerability in the ls program. It is possible to make ls allocate a
huge amount of memory by specifying certain command line arguments. This
vulnerability is remotely exploitable through services like wu-ftpd, which
pass user arguments to ls. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CVE-2003-0854 to this issue.
A non-exploitable integer overflow in ls has been discovered. It is
possible to make ls crash by specifying certain command line arguments.
This vulnerability is remotely exploitable through services like wu-ftpd,
which pass user arguments to ls. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CVE-2003-0853 to this issue.
Users are advised to update to these erratum packages, which contain
backported security patches that correct these vulnerabilities.
These packages also add support for the O_DIRECT flag, which controls the
use of synchronous I/O on file systems such as OCFS.
Solution : http://rhn.redhat.com/errata/RHSA-2003-310.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security
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