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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2004:478

The remote host is missing updates announced in
advisory RHSA-2004:478.

XFree86 is an open source implementation of the X Window System. It
provides the basic low level functionality which full fledged graphical
user interfaces (GUIs) such as GNOME and KDE are designed upon.

During a source code audit, Chris Evans discovered several stack overflow
flaws and an integer overflow flaw in the X.Org libXpm library used to
decode XPM (X PixMap) images. An attacker could create a carefully crafted
XPM file which would cause an application to crash or potentially execute
arbitrary code if opened by a victim. The Common Vulnerabilities and
Exposures project ( has assigned the names CVE-2004-0687,
CVE-2004-0688, and CVE-2004-0692 to these issues.

A flaw was found in the X Display Manager (XDM). XDM is shipped with Red
Hat Enterprise Linux, but is not used by default. XDM opened a chooserFd
TCP socket even if the DisplayManager.requestPort parameter was set to 0.
This allowed authorized users to access a machine remotely via X, even if
the administrator had configured XDM to refuse such connections. Although
XFree86 4.3.0 was not vulnerable to this issue, Red Hat Enterprise Linux 3
contained a backported patch which introduced this flaw. The Common
Vulnerabilities and Exposures project ( has assigned the name
CVE-2004-0419 to this issue.

Users are advised to upgrade to these erratum packages, which contain
backported security patches to correct these and a number of other issues.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2004-0419
BugTraq ID: 10423
Computer Incident Advisory Center Bulletin: P-001
OpenBSD Security Advisory: 20040526 008: SECURITY FIX: May 26, 2004
XForce ISS Database: xdm-socket-gain-access(16264)
Common Vulnerability Exposure (CVE) ID: CVE-2004-0687
BugTraq ID: 11196
Bugtraq: 20040915 CESA-2004-004: libXpm (Google Search)
Cert/CC Advisory: TA05-136A
CERT/CC vulnerability note: VU#882750
Conectiva Linux advisory: CLA-2005:924
Debian Security Information: DSA-560 (Google Search)
HPdes Security Advisory: HPSBUX02119
HPdes Security Advisory: SSRT4848
SuSE Security Announcement: SUSE-SA:2004:034 (Google Search)
XForce ISS Database: libxpm-multiple-stack-bo(17414)
Common Vulnerability Exposure (CVE) ID: CVE-2004-0688
CERT/CC vulnerability note: VU#537878
XForce ISS Database: libxpm-xpmfile-integer-overflow(17416)
Common Vulnerability Exposure (CVE) ID: CVE-2004-0692
Debian Security Information: DSA-542 (Google Search)
SuSE Security Announcement: SUSE-SA:2004:027 (Google Search)
XForce ISS Database: qt-xpm-dos(17041)
CopyrightCopyright (c) 2005 E-Soft Inc.

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