Secunia Research: Xpdf JBIG2 Symbol Dictionary Buffer Overflow Vulnerability
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Secunia Research 17/04/2009
- Xpdf JBIG2 Symbol Dictionary Buffer Overflow Vulnerability -
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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
* Xpdf 3.02pl2
NOTE: Prior 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
"Xpdf is an open source viewer for Portable Document Format (PDF)
files. (These are also sometimes also called 'Acrobat' files, from the
name of Adobe's PDF software.) The Xpdf project also includes a PDF
text extractor, PDF-to-PostScript converter, and various other
utilities.".
Product Link:
http://www.foolabs.com/xpdf/
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4) Description of Vulnerability
Secunia Research has discovered a vulnerability in Xpdf, which can be
exploited by malicious people to potentially compromise a user's
system.
The vulnerability is caused due to a boundary error 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
Apply xpdf-3.02pl3.patch.
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6) Time Table
26/03/2009 - Vendor notified.
26/03/2009 - vendor-sec notified.
27/03/2009 - Vendor response.
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/2009-17/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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