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TITLE:
Lhaplus ARJ Long Filename Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA26907

VERIFY ADVISORY:
http://secunia.com/advisories/26907/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Lhaplus 1.x
http://secunia.com/product/11205/

DESCRIPTION:
Fourteenforty Research has reported a vulnerability in Lhaplus, which
can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an input validation error when
handling ARJ archives. This can be exploited to cause a heap-based
buffer overflow via a specially crafted ARJ archive containing a long
filename.

Successful exploitation allows execution of arbitrary code.

The vulnerability is reported in version 1.53. Other versions may
also be affected.

SOLUTION:
Update to version 1.55.
http://www7a.biglobe.ne.jp/~schezo/

PROVIDED AND/OR DISCOVERED BY:
Fourteenforty Research Institute, Inc.

ORIGINAL ADVISORY:
Lhaplus:
http://www7a.biglobe.ne.jp/~schezo/arj_vul.html

Fourteenforty Research Institute, Inc.:
http://www.fourteenforty.jp/research/advisory.cgi?FFRRA-20070921

OTHER REFERENCES:
JVN:
http://jvn.jp/jp/JVN%2370734805/index.html

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