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Insecure Library Loading
Moderately critical

Cisco Firewall Services Module Multiple Denial of Service Vulnerabilities

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Release Date:  2010-08-05    Views:  3,569

Secunia Advisory SA40843

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in Cisco Firewall Services Module (FWSM), which can be exploited by malicious people to cause a DoS (Denial of Service).

1) Three errors exist in the SunRPC inspection engine while processing certain SunRPC messages. This can be exploited to reload a device via specially crafted SunRPC packets that transit the appliance.

2) An error exists in the processing of certain TCP packets when the device is configured in multi-mode (with virtual firewalls) and accepts Telnet, SSH, or ASDM connections. This can be exploited to reload the device by sending a series of specially crafted TCP packets.

Successful exploitation of this vulnerability requires a complete TCP three-way handshake.


Solution:
Update to a fixed version. Please see the vendor's advisory for detailed patch information.

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

Original Advisory:
cisco-sa-20100804-fwsm:
http://www.cisco.com/warp/public/707/cisco-sa-20100804-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 Firewall Services Module Multiple Denial of Service Vulnerabilities

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