(Red Hat Issues Fix) Xpdf Bugs in streams and t1lib Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID: 1018917|
SecurityTracker URL: http://securitytracker.com/id/1018917
(Links to External Site)
Date: Nov 8 2007
Execution of arbitrary code via network, User access via network|
Fix Available: Yes Vendor Confirmed: Yes |
Several vulnerabilities were reported in Xpdf. A remote user can cause arbitrary code to be executed on the target user's system.|
A remote user can create a specially crafted PDF file that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.
A specially crafted Type 1 font filename can trigger a flaw in the t1lib library and cause code execution [CVE-2007-4033]
Specially crafted data can trigger a memory corruption error in the DCTStream::readProgressiveDataUnit() function in 'xpdf/Stream.cc' [CVE-2007-4352].
Specially crafted data can trigger an integer overflow in the DCTStream::reset() function in 'xpdf/Stream.cc' [CVE-2007-5392].
A specially crafted CCITTFaxDecode filter can trigger a heap overflow in the CCITTFaxStream::lookChar() function in 'xpdf/Stream.cc' [CVE-2007-5393].
The vendor was notified on October 17, 2007.
Alin Rad Pop of Secunia Research reported three of these vulnerabilities. r0ut3r discovered one of these vulnerabilities.
A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.|
Red Hat has released a fix for CVE-2007-4033 and CVE-2007-5393.|
The Red Hat advisory is available at:
Vendor URL: www.foolabs.com/xpdf/ (Links to External Site)
Access control error, Boundary error|
|Underlying OS: Linux (Red Hat Enterprise)|
|Underlying OS Comments: 2.1|
This archive entry is a follow-up to the message listed below.|
Source Message Contents
Subject: [RHSA-2007:1031-01] Important: xpdf security update|
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Red Hat Security Advisory
Synopsis: Important: xpdf security update
Advisory ID: RHSA-2007:1031-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2007-1031.html
Issue date: 2007-11-07
Updated on: 2007-11-07
Product: Red Hat Enterprise Linux
CVE Names: CVE-2007-4033 CVE-2007-5393
Updated xpdf packages that fix several security issues are now available
for Red Hat Enterprise Linux 2.1.
This update has been rated as having important security impact by the Red
Hat Security Response Team.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
3. Problem description:
Xpdf is an X Window System-based viewer for Portable Document Format (PDF)
Alin Rad Pop discovered a flaw in the handling of PDF files. An attacker
could create a malicious PDF file that would cause Xpdf to crash, or
potentially execute arbitrary code when opened. (CVE-2007-5393)
A flaw was found in the t1lib library, used in the handling of Type 1
fonts. An attacker could create a malicious file that would cause Xpdf
to crash, or potentially execute arbitrary code when opened.
Users are advised to upgrade to these updated packages, which contain
backported patches to resolve these issues.
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
5. Bug IDs fixed (http://bugzilla.redhat.com/):
345121 - CVE-2007-5393 xpdf buffer overflow in CCITTFaxStream::lookChar()
352271 - CVE-2007-4033 t1lib font filename string overflow
6. RPMs required:
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :
Red Hat Linux Advanced Workstation 2.1:
Red Hat Enterprise Linux ES version 2.1:
Red Hat Enterprise Linux WS version 2.1:
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <firstname.lastname@example.org>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2007 Red Hat, Inc.
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