[security-alerts] FW: [SA20488] LibTIFF tiff2pdf Buffer Overflow Vulnerability

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

> 
> TITLE:
> LibTIFF tiff2pdf Buffer Overflow Vulnerability
> 
> SECUNIA ADVISORY ID:
> SA20488
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/20488/
> 
> CRITICAL:
> Moderately critical
> 
> IMPACT:
> DoS, System access
> 
> WHERE:
> From remote
> 
> SOFTWARE:
> LibTIFF 3.x
> http://secunia.com/product/4053/
> 
> DESCRIPTION:
> gpe92 has discovered a vulnerability in LibTIFF, which can be
> exploited by malicious people to cause a DoS (Denial of Service) and
> potentially compromise a user's system.
> 
> The vulnerability is caused due to a boundary error within tiff2pdf
> when handling a TIFF file with a "DocumentName" tag that contains
> UTF-8 characters. This can be exploited to cause a stack-based buffer
> overflow and may allow arbitrary code execution.
> 
> The vulnerability has been confirmed in version 3.8.2. Other versions
> may also be affected.
> 
> SOLUTION:
> Restrict use to trusted TIFF files only.
> 
> PROVIDED AND/OR DISCOVERED BY:
> gpe92
> 
> ORIGINAL ADVISORY:
> http://bugzilla.remotesensing.org/show_bug.cgi?id=1196
> 
>