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TITLE:
ALZip ACE Archive Handling Buffer Overflow

SECUNIA ADVISORY ID:
SA16479

VERIFY ADVISORY:
http://secunia.com/advisories/16479/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
ALZip 5.x
http://secunia.com/product/5668/
ALZip 6.x
http://secunia.com/product/5669/

DESCRIPTION:
Secunia Research has discovered a vulnerability in ALZip, which can
be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in UNACEV2.DLL
when extracting an ACE archive containing a file with an overly long
filename. This can be exploited to cause a stack-based buffer
overflow when a user extracts a specially crafted ACE archive.

Successful exploitation allows execution of arbitrary code.

The vulnerability affects the following versions:
* ALZip v6.11 and prior (Korean)
* ALZip v5.52 (All language versions)
* ALZip v5.51 (All language versions)
* ALZip v6.03 (English)
* ALZip v6.1 beta

The vulnerability is related to:
SA14359

SOLUTION:
Update to the fixed versions.

International Versions:
Update to version 6.1
http://www.altools.net/Portals/0/ALZip.exe

Korean Version:
Update to version 6.12
http://down.altools.com/ALZip612.exe

PROVIDED AND/OR DISCOVERED BY:
Tan Chew Keong, Secunia Research.

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2005-41/advisory/

OTHER REFERENCES:
SA14359:
http://secunia.com/advisories/14359/

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/


Please Note:
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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