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Category:   Device (Firewall)  >   Cisco ASA Vendors:   Cisco
Cisco ASA BGP Bidirectional Forwarding Detection Bug Lets Remote Users Bypass the Firewall
SecurityTracker Alert ID:  1038051
SecurityTracker URL:  http://securitytracker.com/id/1038051
CVE Reference:   CVE-2017-3867   (Links to External Site)
Date:  Mar 15 2017
Impact:   Host/resource access via network
Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Cisco ASA. A remote user can bypass security controls on the target system.

A remote user can send TCP or UDP packets via ports 3784 and 3785 to exploit a flaw in the Border Gateway Protocol (BGP) Bidirectional Forwarding Detection (BFD) implementation and bypass the firewall access controls.

The vendor has assigned bug ID CSCvc68229 to this vulnerability.

Impact:   A remote user can bypass the firewall to access hosts or resources on the protected network.
Solution:   No solution was available at the time of this entry.

The vendor advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-asa

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-asa (Links to External Site)
Cause:   Access control error

Message History:   None.


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