[security-alerts] FW: [SA18740] Microsoft HTML Help Workshop ".hhp" Parsing Buffer Overflow

["Kazennov, Vladimir" <Vladimir.Kazennov@xxxxxxxxxx>]

> 
> 
> TITLE:
> Microsoft HTML Help Workshop ".hhp" Parsing Buffer Overflow
> 
> SECUNIA ADVISORY ID:
> SA18740
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/18740/
> 
> CRITICAL:
> Moderately critical
> 
> IMPACT:
> System access
> 
> WHERE:
> From remote
> 
> SOFTWARE:
> Microsoft HTML Help Workshop 4.x
> http://secunia.com/product/6967/
> 
> DESCRIPTION:
> bratax has discovered a vulnerability in Microsoft HTML Help
> Workshop, which 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 a ".hhp" file that contains an overly long string in the
> "Contents file" field. This can be exploited to cause a stack-based
> buffer overflow and allows arbitrary code execution when a malicious
> ".hhp" file is opened.
> 
> Note: An exploit is publicly available.
> 
> The vulnerability has been confirmed in version 4.74.8702.0. Other
> versions may also be affected.
> 
> SOLUTION:
> Do not open untrusted ".hhp" files.
> 
> PROVIDED AND/OR DISCOVERED BY:
> bratax
> 
> ORIGINAL ADVISORY:
> http://users.pandora.be/bratax/advisories/b008.html
> 
> ----------------------------------------------------------------------