bruiser has discovered a vulnerability in IBM Informix Client Software Development Kit (CSDK) and IBM Informix Connect, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the processing of ".nfx" files. This can be exploited to cause a stack-based buffer overflow when an ".nfx" file having e.g. an overly long "HostList" entry is opened.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in setnet32.exe version 3.50.0.13752 included in IBM Informix CSDK version 3.50. Other versions may also be affected.

Solution
Do not open untrusted ".nfx" files.

Provided and/or discovered by
Nine:Situations:Group::bruiser

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://retrogod.altervista.org/9sg_ibm_setnet32.html

Deep Links
Links available to Secunia VIM customers