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CERT Coordination Center

FreeType 2 CFF font stack corruption vulnerability

Vulnerability Note VU#275247

Original Release Date: 2010-08-05 | Last Revised: 2010-09-14

Overview

FreeType 2 contains a vulnerability in the processing of CFF fonts, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

Description

FreeType is a font engine that can open and process font files. FreeType 2 includes the ability to handle a number of font types, including Compact Font Format (CFF). FreeType is used by a number of applications, including PDF readers, web browsers, and other applications. FreeType 2 contains a flaw in the handling of some CFF opcodes, which can result in stack corruption. This can allow arbitrary code execution.

This vulnerability is being used in the iPhone PDF JailBreak exploit.

Impact

By causing an application that uses FreeType to parse a specially-crafted CFF font, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. This can occur as the result of opening a PDF document or viewing a web page.

Solution

Apply an update
This vulnerability is fixed in the FreeType source tree. Please check with your vendor for an update.

Vendor Information

275247
 
Affected   Unknown   Unaffected

Apple Inc.

Notified:  August 04, 2010 Updated:  August 11, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

This issue is addressed in iOS 4.0.2 and iOS 3.2.2.

Vendor References

http://support.apple.com/kb/HT4292 http://support.apple.com/kb/HT4291

Addendum

We have confirmed that Safari 3.x on Windows is vulnerable, as it uses FreeType. Newer versions are not affected.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Debian GNU/Linux

Notified:  August 10, 2010 Updated:  August 11, 2010

Statement Date:   August 11, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

F5 Networks, Inc.

Notified:  August 10, 2010 Updated:  August 11, 2010

Statement Date:   August 10, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

BIG-IP includes FreeType 2.2.1, however it is not allowed to generate graphs from arbitrary font files or documents. Therefore it is not vulnerable to remote attack.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Foxit Software Company

Notified:  August 06, 2010 Updated:  August 06, 2010

Statement Date:   August 06, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

http://www.foxitsoftware.com/pdf/reader/security_bulletins.php#iphone

Addendum

Foxit Software has released version 4.1.1.0805 to address this vulnerability. More information can be found at:

http://www.foxitsoftware.com/pdf/reader/security_bulletins.php#iphone

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Gentoo Linux

Notified:  August 10, 2010 Updated:  August 11, 2010

Statement Date:   August 10, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Red Hat, Inc.

Updated:  August 05, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

https://rhn.redhat.com/errata/RHSA-2010-0607.html

SUSE Linux

Notified:  August 10, 2010 Updated:  September 10, 2010

Statement Date:   September 08, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

http://support.novell.com/security/cve/CVE-2010-1797.html http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00005.html

Wind River Systems, Inc.

Notified:  August 10, 2010 Updated:  August 11, 2010

Statement Date:   August 11, 2010

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Google

Notified:  September 10, 2010 Updated:  September 14, 2010

Statement Date:   September 14, 2010

Status

  Not Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Juniper Networks, Inc.

Notified:  August 10, 2010 Updated:  August 23, 2010

Statement Date:   August 19, 2010

Status

  Not Affected

Vendor Statement

Juniper Networks products are not susceptible to this vulnerability

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Openwall GNU/*/Linux

Notified:  August 10, 2010 Updated:  August 23, 2010

Statement Date:   August 13, 2010

Status

  Not Affected

Vendor Statement

We're not shipping FreeType 2 in any product.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Conectiva Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Cray Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

DragonFly BSD Project

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

EMC Corporation

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Engarde Secure Linux

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fedora Project

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

FreeBSD Project

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fujitsu

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hewlett-Packard Company

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hitachi

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation (zseries)

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM eServer

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Infoblox

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Mandriva S. A.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Microsoft Corporation

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

MontaVista Software, Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NEC Corporation

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NetBSD

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Nokia

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Novell, Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

QNX Software Systems Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

SafeNet

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Silicon Graphics, Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Slackware Linux Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sony Corporation

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sun Microsystems, Inc.

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

The SCO Group

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Turbolinux

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Ubuntu

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Unisys

Notified:  August 10, 2010 Updated:  August 10, 2010

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Credit

This vulnerability was discovered being exploited in the wild. Additional analysis was performed by Braden Thomas of Apple Product Security.

This document was written by Will Dormann.

Other Information

CVE IDs: CVE-2010-1797
Severity Metric: 13.39
Date Public: 2010-08-02
Date First Published: 2010-08-05
Date Last Updated: 2010-09-14 10:17 UTC
Document Revision: 29

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