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                     Secunia Research 17/04/2009

       - CUPS pdftops JBIG2 Symbol Dictionary Buffer Overflow -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* CUPS 1.3.9

NOTE: Prior versions may also be affected.

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2) Severity 

Rating: Moderately critical 
Impact: System access
Where:  Local network

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3) Vendor's Description of Software 

"CUPS is the standards-based, open source printing system developed by
 Apple Inc. for Mac OS® X and other UNIX®-like operating systems."

Product Link:
http://www.cups.org/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in CUPS, which can be 
exploited by malicious people to potentially compromise a vulnerable 
system.

The vulnerability is caused due to a boundary error in pdftops while 
decoding JBIG2 symbol dictionary segments. This can be exploited to 
cause a heap-based buffer overflow via a specially crafted PDF file.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Update to version 1.3.10.

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6) Time Table 

26/03/2009 - Vendor notified.
26/03/2009 - vendor-sec notified.
17/04/2009 - Public disclosure.

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7) Credits 

Discovered by Alin Rad Pop, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2009-0195 for the vulnerability.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-18/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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