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Cisco Adaptive Security Appliance BGP Bidirectional Forwarding Detection ACL Bypass Vulnerability
Information
Severity
Severity
Medium
Family
Family
CISCO
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Solution Type
Solution Type
Vendor Patch
Created
Created
7 years ago
Modified
Modified
5 years ago
Summary
A vulnerability in the Border Gateway Protocol (BGP) Bidirectional Forwarding Detection (BFD) implementation of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to bypass the access control list (ACL) for specific TCP and UDP traffic.
Insight
Insight
The vulnerability occurs because the BFD implementation incorrectly allows traffic with destination ports 3784 and 3785 through the interface ACLs.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
See the referenced vendor advisory for a solution.