This script is Copyright (C) 2004-2014 Tenable Network Security, Inc.
The remote Red Hat host is missing one or more security updates.
Updated libpng packages that fix several issues are now available.
The libpng package contains a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files.
During a source code audit, Chris Evans discovered several buffer
overflows in libpng. An attacker could create a carefully crafted PNG
file in such a way that it would cause an application linked with
libpng to execute arbitrary code when the file was opened by a victim.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CVE-2004-0597 to these issues.
In addition, this audit discovered a potential NULL pointer
dereference in libpng (CVE-2004-0598) and several integer overflow
issues (CVE-2004-0599). An attacker could create a carefully crafted
PNG file in such a way that it would cause an application linked with
libpng to crash when the file was opened by the victim.
Red Hat would like to thank Chris Evans for discovering these issues.
For users of Red Hat Enterprise Linux 2.1 these patches also include a
more complete fix for the out of bounds memory access flaw
All users are advised to update to the updated libpng packages which
contain backported security patches and are not vulnerable to these
See also :
Update the affected packages.
Risk factor :
Critical / CVSS Base Score : 10.0
Public Exploit Available : true