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[SA13903] Xpdf "Decrypt::makeFileKey2()" Function Buffer Overflow

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Jan 19 2005 - 02:50:35 CST

TITLE:
Xpdf "Decrypt::makeFileKey2()" Function Buffer Overflow

SECUNIA ADVISORY ID:
SA13903

VERIFY ADVISORY:
http://secunia.com/advisories/13903/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
Xpdf 3.x
http://secunia.com/product/4128/
Xpdf 2.x
http://secunia.com/product/920/
Xpdf 1.x
http://secunia.com/product/4444/

DESCRIPTION:
A vulnerability has been reported in Xpdf, which can be exploited by
malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the
"Decrypt::makeFileKey2()" function. This can be exploited to cause a
stack-based buffer overflow by tricking a user into viewing a
malicious PDF document containing specially crafted values in the
"/Encrypt /Length" tag.

Successful exploitation allows execution of arbitrary code.

The vulnerability has been reported in version 3.00. Prior versions
may also be affected.

SOLUTION:
Update to version 3.00pl3 or apply patch.
http://www.foolabs.com/xpdf/download.html

Patch:
ftp://ftp.foolabs.com/pub/xpdf/xpdf-3.00pl3.patch

PROVIDED AND/OR DISCOVERED BY:
Discovered by anonymous person and reported via iDEFENSE.

ORIGINAL ADVISORY:
iDEFENSE:
http://www.idefense.com/application/poi/display?id=186&type=vulnerabilities

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