First published: Fri Jul 19 2024(Updated: )
If a server hosts a zone containing a "KEY" Resource Record, or a resolver DNSSEC-validates a "KEY" Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests. This issue affects BIND 9 versions 9.0.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.49-S1, and 9.18.11-S1 through 9.18.27-S1.
Credit: security-officer@isc.org security-officer@isc.org
Affected Software | Affected Version | How to fix |
---|---|---|
F5 BIG-IP (DNS) | >=17.1.0<=17.1.1 | 17.1.2 |
F5 BIG-IP (DNS) | >=16.1.0<=16.1.5 | |
F5 BIG-IP (DNS) | >=15.1.0<=15.1.10 | |
debian/bind9 | 1:9.16.50-1~deb11u2 1:9.16.50-1~deb11u1 1:9.18.28-1~deb12u2 1:9.20.4-2 |
Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.28, 9.20.0, or 9.18.28-S1.
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