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Category:   Device (Firewall)  >   Cisco ASA Vendors:   Cisco
Cisco ASA CX Context-Aware Security Module IP Fragment Processing Flaw Lets Remote Users Consume Excessive Memory Resources
SecurityTracker Alert ID:  1037696
SecurityTracker URL:  http://securitytracker.com/id/1037696
CVE Reference:   CVE-2016-9225   (Links to External Site)
Date:  Jan 25 2017
Impact:   Denial of service via network
Vendor Confirmed:  Yes  
Version(s): CX Context-Aware Security Module
Description:   A vulnerability was reported in Cisco ASA CX Context-Aware Security Module. A remote user can consume excessive memory on the target system.

A remote user can send specially crafted IP fragments through the module to consume free packet buffers in shared memory and cause the module to stop processing traffic.

Traffic specifically directed toward the module by the Modular Policy Framework (MPF) configuration on the parent Cisco ASA is affected.

The vendor has assigned bug ID CSCva62946 to this vulnerability.

Impact:   A remote user can consume excessive memory resources on the target module and cause the module to stop processing traffic.
Solution:   No solution was available at the time of this entry.

[Editor's note: The ASA CX module has entered the end-of-life (EoL) process and the vendor does not plan to issue a fix.]

The vendor advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170125-cas

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170125-cas (Links to External Site)
Cause:   Not specified

Message History:   None.


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