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TITLE:
UNARJ Filename Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA13177

VERIFY ADVISORY:
http://secunia.com/advisories/13177/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
UNARJ 2.x
http://secunia.com/product/4036/

DESCRIPTION:
A vulnerability has been reported in UNARJ, which potentially can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error within the
handling of long filenames in archives. This can be exploited to
cause a buffer overflow by tricking a user into opening a malicious
archive with a specially crafted path.

Successful exploitation may allow execution of arbitrary code.

SOLUTION:
The vendor reports that UNARJ is just a demonstration product and
should not be used on production systems.

The vendor recommends users to use ARJ instead.

PROVIDED AND/OR DISCOVERED BY:
First reported in a Fedora advisory.

ORIGINAL ADVISORY:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=138468

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