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Category:   Application (Generic)  >   FreeType Vendors:   freetype.org
(Red Hat Issues Fix) FreeType2 Heap Overflows in Parsing PFB and TTF Font Files Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1020343
SecurityTracker URL:  http://securitytracker.com/id/1020343
CVE Reference:   CVE-2008-1808   (Links to External Site)
Date:  Jun 21 2008
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.3.5 and prior versions
Description:   A vulnerability was reported in FreeType2. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted Printer Font Binary (PFB) format or TrueType Font file that, when loaded by the target user or application, will trigger a heap overflow and execute arbitrary code on the target system. The code will run with the privileges of the target user or application.

The vendor was notified on June 3, 2008.

regenrecht reported this vulnerability via iDefense.

Impact:   A remote user can create a file that, when loaded by the target user or application, will execute arbitrary code on the target system.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0558.html

Vendor URL:  www.freetype.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  2.1

Message History:   This archive entry is a follow-up to the message listed below.
Jun 11 2008 FreeType2 Heap Overflows in Parsing PFB and TTF Font Files Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2008:0558-01] Important: freetype security update


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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: freetype security update
Advisory ID:       RHSA-2008:0558-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0558.html
Issue date:        2008-06-20
CVE Names:         CVE-2008-1806 CVE-2008-1807 CVE-2008-1808 
=====================================================================

1. Summary:

Updated freetype packages that fix various 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. Description:

FreeType is a free, high-quality, portable font engine that can open and
manage font files, as well as efficiently load, hint and render individual
glyphs.

Multiple flaws were discovered in FreeType's Printer Font Binary (PFB) and
TrueType Font (TTF) font-file format parsers. If a user loaded a carefully
crafted font-file with a program linked against FreeType, it could cause
the application to crash, or possibly execute arbitrary code.
(CVE-2008-1806, CVE-2008-1807, CVE-2008-1808)

Note: the flaw in FreeType's TrueType Font (TTF) font-file format parser,
covered by CVE-2008-1808, only affected the FreeType 1 library (libttf),
shipped in the freetype packages in Red Hat Enterprise Linux 2.1. The
FreeType 2 library (libfreetype) is not affected, as it is not compiled
with TTF Byte Code Interpreter (BCI) support.

Users of freetype should upgrade to these updated packages, which contain
backported patches to resolve these issues.

4. Solution:

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
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bugs fixed (http://bugzilla.redhat.com/):

450768 - CVE-2008-1806 FreeType PFB integer overflow
450773 - CVE-2008-1807 FreeType invalid free() flaw
450774 - CVE-2008-1808 FreeType off-by-one flaws

6. Package List:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :

Source:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/freetype-2.0.3-13.el21.src.rpm

i386:
freetype-2.0.3-13.el21.i386.rpm
freetype-devel-2.0.3-13.el21.i386.rpm
freetype-utils-2.0.3-13.el21.i386.rpm

ia64:
freetype-2.0.3-13.el21.ia64.rpm
freetype-devel-2.0.3-13.el21.ia64.rpm
freetype-utils-2.0.3-13.el21.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/freetype-2.0.3-13.el21.src.rpm

ia64:
freetype-2.0.3-13.el21.ia64.rpm
freetype-devel-2.0.3-13.el21.ia64.rpm
freetype-utils-2.0.3-13.el21.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/freetype-2.0.3-13.el21.src.rpm

i386:
freetype-2.0.3-13.el21.i386.rpm
freetype-devel-2.0.3-13.el21.i386.rpm
freetype-utils-2.0.3-13.el21.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/freetype-2.0.3-13.el21.src.rpm

i386:
freetype-2.0.3-13.el21.i386.rpm
freetype-devel-2.0.3-13.el21.i386.rpm
freetype-utils-2.0.3-13.el21.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1806
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1807
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1808
http://www.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2008 Red Hat, Inc.
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