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TITLE:
GhostScript PostScript File Processing Vulnerabilities

SECUNIA ADVISORY ID:
SA39753

VERIFY ADVISORY:
http://secunia.com/advisories/39753/

DESCRIPTION:
Dan Rosenberg has reported some vulnerabilities in GhostScript, which
can potentially be exploited by malicious people to compromise a
user's system.

1) An error in the processing of PostScript files can be exploited to
cause a memory corruption via recursive function calls and may allow
execution of arbitrary code via a specially crafted PostScript file.

2) An error in the handling of overly long identifiers can be
exploited to cause a stack-based buffer overflow via a specially
crafted PostScript file.

Successful exploitation allows execution of arbitrary code.

The vulnerabilities are reported in 8.70. Other versions may also be
affected.

SOLUTION:
Do not process untrusted PostScript files.

PROVIDED AND/OR DISCOVERED BY:
Dan Rosenberg

ORIGINAL ADVISORY:
Dan Rosenberg:
http://archives.neohapsis.com/archives/fulldisclosure/2010-05/0135.html
https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/546009
http://bugs.ghostscript.com/show_bug.cgi?id=691295

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