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AUSCERT External Security Bulletin Redistribution
ESB-2008.0019 -- [Solaris]
Security Vulnerability in FreeType 2 Font Engine May Allow
Privilege Escalation Due to Heap Overflow
8 January 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: FreeType 2
Publisher: Sun Microsystems
Operating System: Solaris 10
Solaris 9
Solaris 8
Impact: Denial of Service
Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2007-2754
Ref: ESB-2007.0400
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103171-1
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Sun(sm) Alert Notification
* Sun Alert ID: 103171
* Synopsis: Security Vulnerability in FreeType 2 Font Engine May
Allow Privilege Escalation Due to Heap Overflow
* Category: Security
* Product: Solaris 9 Operating System, Solaris 10 Operating System,
Solaris 8 Operating System
* BugIDs: 6589553
* Avoidance: Patch
* State: Resolved
* Date Released: 06-Jan-2008
* Date Closed: 06-Jan-2008
* Date Modified:
1. Impact
An integer overflow leading to a heap overflow vulnerability in the
FreeType 2 Font Engine, which is shipped with Solaris, may affect
applications that make use of this library. Depending on the
application, this may allow a local or remote unprivileged user to
crash the application using FreeType (which is a type of Denial of
Service), or to execute arbitrary code with the privileges of the
application.
This issue is described in the following document:
* CVE-2007-2754 at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2754
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 8 without patch 124420-03
* Solaris 9 without patch 116105-08
* Solaris 10 without patch 119812-05
x86 Platform
* Solaris 8 without patch 124421-03
* Solaris 9 without patch 116106-07
* Solaris 10 without patch 119813-07
To determine if an application is linked with the libfreetype library,
the ldd(1) utility can be utilized as in the following example:
$ ldd /usr/bin/gedit | grep libfreetype
libfreetype.so.6 => /usr/sfw/lib/libfreetype.so.6
Note: Applications which don't list the FreeType library as a dynamic
dependency in the ldd(1) output may open the library during process
execution using functions such as dlopen(3C) and therefore may still
be impacted.
3. Symptoms
If the described issue is exploited to cause a Denial of Service (DoS)
to an application which links to the libfreetype library, the
application will exit and may generate an error message about a
Segmentation Fault, potentially writing a core(4) file. There are no
predictable symptoms that would indicate the issue has been exploited
to execute arbitrary code with elevated privileges.
4. Relief/Workaround
There is no workaround for this issue. Please see the "Resolution"
section below.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Solaris 8 with patch 124420-03 or later
* Solaris 9 with patch 116105-08 or later
* Solaris 10 with patch 119812-05 or later
x86 Platform
* Solaris 8 with patch 124421-03 or later
* Solaris 9 with patch 116106-07 or later
* Solaris 10 with patch 119813-07 or later
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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