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[Full-disclosure] Cisco Security Advisory: Cisco Firewall Services Module Cut-Through Proxy Denial of Service Vulnerability
- To: full-disclosure@xxxxxxxxxxxxxxxxx
- Subject: [Full-disclosure] Cisco Security Advisory: Cisco Firewall Services Module Cut-Through Proxy Denial of Service Vulnerability
- From: Cisco Systems Product Security Incident Response Team <psirt@xxxxxxxxx>
- Date: Wed, 19 Feb 2014 11:00:31 -0500
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Cisco Security Advisory: Cisco Firewall Services Module Cut-Through Proxy
Denial of Service Vulnerability
Advisory ID: cisco-sa-20140219-fwsm
Revision 1.0
For Public Release 2014 February 19 16:00 UTC (GMT)
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Summary
=======
Cisco Firewall Services Module (FWSM) Software contains a vulnerability that
could allow an unauthenticated, remote attacker to cause a reload of an
affected system.
The vulnerability is due to a race condition when releasing the memory
allocated by the cut-through proxy function. An attacker could exploit this
vulnerability by sending traffic to match the condition that triggers
cut-through proxy authentication.
Cisco has released free software updates that address this vulnerability.
Workarounds that mitigate the vulnerability are not available. This advisory is
available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140219-fwsm
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