TITLE:
Zoo "fullpath()" File Name Handling Buffer Overflow

SECUNIA ADVISORY ID:
SA19002

VERIFY ADVISORY:
http://secunia.com/advisories/19002/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
zoo 2.x
http://secunia.com/product/8297/

DESCRIPTION:
Jean-Sébastien Guay-Leroux has discovered a vulnerability in zoo,
which can be exploited by malicious people to cause a DoS (Denial of
Service) and potentially to compromise a user's system.

The vulnerability is caused due to a boundary error in the
"fullpath()" function in misc.c. This can be exploited to cause a
buffer overflow when a specially-crafted ZOO archive containing a
file with an overly long file and directory name is processed (e.g.
listing archive contents or adding new files to the archive).

The vulnerability has been confirmed in version 2.10. Other versions
may also be affected.

SOLUTION:
Restrict use to trusted ZOO archives.

PROVIDED AND/OR DISCOVERED BY:
Jean-Sébastien Guay-Leroux

ORIGINAL ADVISORY:
http://www.guay-leroux.com/projects/zoo-advisory.txt

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