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Secunia Advisory SA26244

Linux Kernel RTA_MAX Security Issue and Seed Refeed Weakness
Secunia Advisory SA26244
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Release Date 2007-07-27
   
Popularity 11,849 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Brute force
DoS
Where From remote
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
Linux Kernel 2.4.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2007-2172 CVSS available in Customer Area
  

Description

A security issue and a weakness have been reported in the Linux Kernel, which potentially can be exploited by malicious people to cause a DoS (Denial of Service) or bypass certain security restrictions.

1) A boundary error due to the use of RTA_MAX instead of RTN_MAX in dn_fib_props[] within dn_fib.c and in fib_props[] within fib_semantics.c can potentially be exploited to cause a DoS.

2) The "xfer_secondary_pool()" function in drivers/char/random.c uses the wrong data to refeed seeds into the random number generator. This may weaken the security of applications relying on the random number generator.

Note: This also fixes a problem introduced by a previous smbfs security patch.


Solution
Update to version 2.4.35.

Provided and/or discovered by
1) PaX Team
2) Thomas Graf

Original Advisory
http://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35

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: Linux Kernel RTA_MAX Security Issue and Seed Refeed Weakness
 
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