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TITLE:
ZipTV ARJ Archive Handling and unacev2.dll Buffer Overflows

SECUNIA ADVISORY ID:
SA20270

VERIFY ADVISORY:
http://secunia.com/advisories/20270/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
ZipTV Compression Components
http://secunia.com/product/11870/

DESCRIPTION:
Secunia Research has discovered two vulnerabilities in ZipTV, which
can be exploited by malicious people to compromise an application
using the library. 

1) A boundary error within the TZipTV component when listing files in
ARJ archives can be exploited to cause a heap-based buffer overflow
via a specially-crafted ARJ archive with an overly large ARJ header
block.

Successful exploitation allows execution of arbitrary code when a
malicious ARJ archive is listed.

2) A boundary error in UNACEV2.DLL (ztvunacev2.dll) when extracting
ACE archives containing a file with an overly long filename can be
exploited to cause a stack-based buffer overflow.

Successful exploitation allows execution of arbitrary code when a
malicious ACE archive is extracted.

The vulnerabilities have been confirmed in the following versions.
* ZipTV for Delphi 7 version 2006.1.26.
* ZipTV for C++ Builder version 2006-1.16.

Other versions may also be affected.

SOLUTION:
Do not open untrusted archives.

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

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2006-50/

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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.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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