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ISC BIND Security Bypass Vulnerability (Remote)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
A flaw was found in the way BIND handled TSIG authentication for dynamic updates. A remote attacker able to communicate with an authoritative BIND server could use this flaw to manipulate the contents of a zone, by forging a valid TSIG or SIG(0) signature for a dynamic update request.
Affected Software
Affected Software
ISC BIND versions 9.4.0-9.8.8, 9.9.0-9.9.10-P1, 9.10.0-9.10.5-P1, 9.11.0-9.11.1-P1, 9.9.3-S1-9.9.10-S2 and 9.10.5-S1-9.10.5-S2
Detection Method
Detection Method
Sends a crafted update request for the TSIG key 'local-ddns' and checks if the response returns a signed MAC.
Solution
Solution
Update to version 9.9.10-P2, 9.10.5-P2, 9.11.1-P2, 9.9.10-S3, 9.10.5-S3 or later.