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TITLE:
MuPDF "loadexponentialfunc()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA34916

VERIFY ADVISORY:
http://secunia.com/advisories/34916/

DESCRIPTION:
c has discovered a vulnerability in MuPDF, which can be exploited by
malicious people to potentially compromise an application using the
library.

The vulnerability is caused due to a boundary error within the
"loadexponentialfunc()" function in pdf_function.c. 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.

The vulnerability is confirmed in the MuPDF library included in the
mupdf-20090223-win32 package. Other versions may also be affected.

SOLUTION:
Do not process untrusted PDF files using the library.

PROVIDED AND/OR DISCOVERED BY:
c

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/fulldisclosure/2009-04/0258.html

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