Secunia Research: Ghostscript jbig2dec JBIG2 Processing Buffer Overflow
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Secunia Research 09/04/2009
- Ghostscript jbig2dec JBIG2 Processing 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
* Ghostscript version 8.64
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly critical
Impact: System access
Where: Remote
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3) Vendor's Description of Software
"An interpreter for the PostScript (TM) language, with the ability to
convert PostScript language files to many raster formats, view them
on displays, and print them on printers that don't have PostScript
language capability built in; An interpreter for Portable Document
Format (PDF) files, with the same abilities; ..."
Product Link:
http://www.ghostscript.com/Ghostscript.html
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4) Description of Vulnerability
Secunia Research has discovered a vulnerability in Ghostscript, which
can be exploited by malicious people to potentially compromise a
user's system.
The vulnerability is caused due to a boundary error in the included
jbig2dec library 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
Do not process untrusted PDF files.
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6) Time Table
26/03/2009 - Vendor notified.
26/03/2009 - vendor-sec notified.
02/04/2009 - Vendor response.
09/04/2009 - 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-2009-0196 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/2009-21/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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