UBUNTU-CVE-2026-94300: High severity ubuntu/bind9 vulnerability
Replaying GSS-TSIG signed UDP messages can result in memory corruption in "named". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially achieve remote code execution. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/bind9to a version that resolves this vulnerability.Fixed in 1:9.18.39-0ubuntu0.22.04.8 - Upgrade
Upgrade
ubuntu/bind9to a version that resolves this vulnerability.Fixed in 1:9.18.39-0ubuntu0.24.04.9 - Upgrade
Upgrade
ubuntu/bind9to a version that resolves this vulnerability.Fixed in 1:9.20.24-1ubuntu3.1 - Upgrade
Upgrade
ubuntu/bind9to a version that resolves this vulnerability.Fixed in 1:9.20.24-1ubuntu0.5