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Linux Kernel SNMP NAT Helper Denial of Service

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Release Date:  2006-05-23    Last Update:  2006-06-13    Views:  18,061

Secunia Advisory SA20225

Where:

From local network

Impact:

DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


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

The vulnerability is caused due to some errors within the "snmp_trap_decode()" function when handling certain SNMP packets. This can be exploited to cause memory corruption due to incorrect freeing of memory, which can potentially cause the system to crash.

Successful exploitation requires that the "ip_nat_snmp_basic" module is loaded and that traffic NAT is enabled on port 161 or 162.


Solution:
Update to version 2.6.16.18.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
Kernel.org:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.18
http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.16.y.git;a=commit;h=1db6b5a66e93ff125ab871d6b3f7363412cc87e8

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 SNMP NAT Helper Denial of Service

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