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TITLE:
PCRE "compile_branch()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA39738

VERIFY ADVISORY:
http://secunia.com/advisories/39738/

DESCRIPTION:
Michael Santos has discovered a vulnerability in PCRE, which can be
exploited by malicious people to cause a DoS (Denial of Service) or
potentially compromise an application using the library.

The vulnerability is caused due to a boundary error within the
"compile_branch()" function pcre_compile.c. This can be exploited to
cause a stack-based buffer overflow via a specially crafted regular
expression.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in version 8.01. Prior versions may
also be affected.

SOLUTION:
Update to version 8.02.

PROVIDED AND/OR DISCOVERED BY:
Michael Santos

ORIGINAL ADVISORY:
http://bugs.exim.org/show_bug.cgi?id=962

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