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Secunia Advisory SA11714

FreeBSD "msync()" MS_INVALIDATE Implementation Security Issue
Secunia Advisory SA11714
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Release Date 2004-05-26
   
Popularity 12,835 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Privilege escalation
Where Local system
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Operating System
FreeBSD 4.x
FreeBSD 5.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2004-0435 CVSS available in Customer Area
  

Description

Stephan Uphoff and Matt Dillon has discovered a security issue in FreeBSD. This can be exploited by malicious, local users to prevent changes to certain files, which they have read access to, from being committed to disk.

The problem is reportedly caused due to programming errors within the "msync()" system call when performing MS_INVALIDATE operations.


Solution
Update to a fixed version or apply patches.
Further details available in Customer Area

Provided and/or discovered by
Stephan Uphoff and Matt Dillon

Original Advisory
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:11.msync.asc

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: FreeBSD "msync()" MS_INVALIDATE Implementation Security Issue
 
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