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Insecure Library Loading
Moderately critical

Cisco FWSM HTTPS/MGCP Packet Processing Denial of Service

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Release Date:  2007-10-18    Last Update:  2007-10-19    Views:  11,089

Secunia Advisory SA27236

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Cisco has acknowledged some vulnerabilities in Cisco Firewall Services Module (FWSM), which can be exploited by malicious people to cause a DoS (Denial of Service).

1) An unspecified error exists within the handling of HTTPS packets. This can be exploited to reboot an affected FWSM by sending specially crafted HTTPS packets.

Successful exploitation requires that the HTTPS server is enabled (disabled by default).

The vulnerability is reported in versions 3.1 and 3.2.

2) An unspecified error exists within the handling of Media Gateway Control Protocol (MGCP) packets. This can be exploited to reboot the FWSM by sending specially crafted MGCP packets.

Successful exploitation requires that the MGCP application layer protocol inspection is enabled (disabled by default).

The vulnerability is reported in version 3.1.

NOTE: An error when loading manipulated ACLs (Access Control Lists) is also reported.


Solution:
Update to a fixed version (please see vendor's advisory for details).

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

Original Advisory:
http://www.cisco.com/warp/public/707/cisco-sa-20071017-fwsm.shtml

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: Cisco FWSM HTTPS/MGCP Packet Processing Denial of Service

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