Multiple flaws have been identified in named related to the handling of DNS messages whose CLASS is not Internet (IN) — for example, CHAOS or HESIOD, or DNS messages that specify meta-classes (ANY or NONE) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (UPDATE), zone change notifications (NOTIFY), or processing of IN-specific record types in non-IN data — can cause assertion failures in named. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
1:9.11.16+dfsg-3~build11:9.11.16+dfsg-3~ubuntu11:9.18.39-0ubuntu0.22.04.41:9.11.19+dfsg-2.1ubuntu11:9.11.19+dfsg-2.1ubuntu21:9.11.19+dfsg-2.1ubuntu31:9.18.39-0ubuntu0.24.04.51:9.20.11-1ubuntu2.41:9.20.18-1ubuntu2.11:9.9.3.dfsg.P2-4ubuntu11:9.9.3.dfsg.P2-4ubuntu21:9.9.3.dfsg.P2-4ubuntu31:9.9.5.dfsg-21:9.9.5.dfsg-31:9.9.5.dfsg-3ubuntu0.11:9.9.5.dfsg-3ubuntu0.101:9.9.5.dfsg-3ubuntu0.111:9.9.5.dfsg-3ubuntu0.121:9.9.5.dfsg-3ubuntu0.13+26 more1:9.10.3.dfsg.P2-41:9.10.3.dfsg.P2-51:9.10.3.dfsg.P4-31:9.10.3.dfsg.P4-41:9.10.3.dfsg.P4-51:9.10.3.dfsg.P4-81:9.10.3.dfsg.P4-8ubuntu11:9.10.3.dfsg.P4-8ubuntu1.11:9.10.3.dfsg.P4-8ubuntu1.101:9.10.3.dfsg.P4-8ubuntu1.11+27 more1:9.10.3.dfsg.P4-12.6ubuntu11:9.11.2.P1-1ubuntu21:9.11.2.P1-1ubuntu31:9.11.2.P1-1ubuntu41:9.11.2.P1-1ubuntu51:9.11.3+dfsg-1ubuntu11:9.11.3+dfsg-1ubuntu1.11:9.11.3+dfsg-1ubuntu1.101:9.11.3+dfsg-1ubuntu1.111:9.11.3+dfsg-1ubuntu1.12+16 more1:9.11.14+dfsg-1ubuntu11:9.11.14+dfsg-3ubuntu11:9.11.5.P4+dfsg-5.1ubuntu21:9.11.5.P4+dfsg-5.1ubuntu31:9.11.5.P4+dfsg-5.1ubuntu41:9.11.5.P4+dfsg-5.1ubuntu51:9.16.0-1ubuntu31:9.16.0-1ubuntu41:9.16.0-1ubuntu51:9.16.1-0ubuntu1+20 moreExploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:HCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H