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Secunia Advisory SA9927

FreeBSD procfs and linprocfs Integer Overflow Vulnerabilities
Secunia Advisory SA9927
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Release Date 2003-10-04
   
Popularity 9,369 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Exposure of sensitive information
DoS
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) No CVE references.
  

Description

Vulnerabilities have been reported in FreeBSD, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or gain knowledge of sensitive information.

The vulnerabilities are caused due to missing input validation of the "uio" offset parameter in the process file system (procfs) and Linux process file system (linprocfs). These can be exploited by specifying an extremely large or negative value as an offset.

Successful exploitation results in a kernel panic or discloses a larger portion of kernel memory.


Solution
Update to one of the following releases or apply patch:
Further details available in Customer Area

Provided and/or discovered by
Joost Pol

Original Advisory
Pine Digital Security Advisory:
http://www.pine.nl/press/pine-cert-20030902.txt

FreeBSD Advisory:
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-03%3A17.procfs.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 procfs and linprocfs Integer Overflow Vulnerabilities
 
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