TITLE:
ZipGenius Multiple Archive Handling Buffer Overflow

SECUNIA ADVISORY ID:
SA17061

VERIFY ADVISORY:
http://secunia.com/advisories/17061/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
ZipGenius 5.x
http://secunia.com/product/4603/
ZipGenius 6.x
http://secunia.com/product/5957/

DESCRIPTION:
Secunia Research has discovered some vulnerabilities in ZipGenius,
which can be exploited by malicious people to compromise a user's
system. 

1) A boundary error exists in "zipgenius.exe", "zg.exe",
"zgtips.dll", and "contmenu.dll" when reading the filename of a
compressed file from a ZIP archive. This can be exploited to cause a
stack-based buffer overflow when a malicious archive containing a
file with an overly long filename is read either in ZipGenius or from
Windows Explorer.

2) A boundary error exists in "zipgenius.exe" when handling the
original name of a UUE/XXE/MIM encoded file. This can be exploited to
cause a stack-based buffer overflow when a malicious UUE/XXE/MIM
archive containing an encoded file with an overly long filename is
opened.

3) A boundary error exists 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 malicious ACE
archive is extracted using "zipgenius.exe" or "zg.exe".

Vulnerability #3 is related to:
SA14359

The vulnerabilities have been confirmed in version 5.5.1.468 and
6.0.2.1041. Prior versions may also be affected.

SOLUTION:
Update to version 6.0.2.1050.
http://downloads.zipgenius.it/

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

ORIGINAL ADVISORY:
ZipGenius:
http://forum.zipgenius.it/index.php?showtopic=684

Secunia Research:
http://secunia.com/secunia_research/2005-54/advisory/

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

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