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Secunia Advisory SA32947

Zaptel "ZT_SPANCONFIG" IOCTL Privilege Escalation Vulnerabilities
Secunia Advisory SA32947
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Release Date 2008-12-02
Last Update 2009-01-05
   
Popularity 4,033 views
Comments 0 comments

Criticality level Not criticalNot critical
Impact Privilege escalation
Where Local system
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Workaround
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
Zaptel 1.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2008-5396 CVSS available in Customer Area
  

Description

Some vulnerabilities have been reported in Zaptel, which can be exploited by malicious, local users to cause a DoS (Denial of Service) and potentially gain escalated privileges.

The vulnerabilities are caused due to the "tor2_spanconfig()" function in kernel/tor2.c and the "torisa_spanconfig()" function in kernel/torisa.c not properly sanitising the "sync" field of the "ZT_SPANCONFIG" IOCTL. This can potentially be exploited to gain escalated privileges by sending a specially crafted "ZT_SPANCONFIG" IOCTL to a vulnerable driver.

Successful exploitation requires that the driver for the "Tormenta 2 Quad-T1 PCI" or "Tormenta ISA" card is used.


Solution
Fixed in the SVN repository.
Further details available in Customer Area

Provided and/or discovered by
Tzafrir Cohen.

Changelog
Further details available in Customer Area

Original Advisory
Digium Bug #13954:
http://bugs.digium.com/view.php?id=13954

Debian Bug #507459:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507459

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: Zaptel "ZT_SPANCONFIG" IOCTL Privilege Escalation Vulnerabilities
 
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