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TITLE:
Graphviz "push_subg" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA32186

VERIFY ADVISORY:
http://secunia.com/advisories/32186/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Graphviz 2.x
http://secunia.com/advisories/product/5815/

DESCRIPTION:
Roee Hay has discovered a vulnerability in Graphviz, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error within the
"push_subg()" function in lib/graph/parser.c, which can be exploited
to cause a memory corruption and potentially execute arbitrary code
by e.g. tricking a user into processing a specially crafted dot
file.

The vulnerability is confirmed in version 2.20.2. Other versions may
also be affected.

SOLUTION:
Update to version 2.20.3.
http://www.graphviz.org/Download.php

PROVIDED AND/OR DISCOVERED BY:
Roee Hay

ORIGINAL ADVISORY:
http://roeehay.blogspot.com/2008/10/graphviz-buffer-overflow-code-execution.html

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