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Insecure Library Loading
Moderately critical

Linux Kernel IPv6 Type 0 Route Headers and RTA_MAX Denial of Service

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Release Date:  2007-04-30    Last Update:  2007-07-27    Views:  15,963

Secunia Advisory SA25068

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


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

1) An error exists within the processing of packets with IPv6 type 0 route headers. This can be exploited to cause a DoS due to high network traffic by sending specially crafted IPv6 packets to vulnerable systems.

2) 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.


Solution:
Update to version 2.6.21.

Provided and/or discovered by:
1) Philippe Biondi and Arnaud Ebalard
2) Thomas Graf

Original Advisory:
Linux:
1) http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21
2) http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.21-rc6

http://www.secdev.org/conf/IPv6_RH_security-csw07.pdf

Deep Links:
Links available to Secunia VIM customers

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 IPv6 Type 0 Route Headers and RTA_MAX Denial of Service

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