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Insecure Library Loading

Secunia Advisory SA21450

X11 libXfont PCF Integer Overflow Vulnerability
Secunia Advisory SA21450
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Release Date 2006-08-11
   
Popularity 12,240 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact DoS
System access
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Unpatched
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
Remediation status Secunia VIM
   
Software:
X Window System 11 (X11) 6.x
X Window System 11 (X11) 7.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) No CVE references.
  

Description

A vulnerability has been reported in libXfont, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.

The vulnerability is caused due to integer overflows within the PCF font file parser. This can potentially be exploited to cause a heap-based buffer overflow via a specially crafted font file.

This is related to:
SA20100

Successful exploitation may allow execution of arbitrary code.


Solution
Apply patch.
Further details available in Customer Area

Original Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=7535

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: X11 libXfont PCF Integer Overflow Vulnerability
 
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