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High DSA-5734-1 3 CVEs

bind9 - security update

Published Jul 25, 2024 · Updated Mar 9, 2026

Fixed packages 2

ReleasePackageFixed in
Debian · 11 bind9 1:9.16.50-1~deb11u1
Debian · 12 bind9 1:9.18.28-1~deb12u1

Vulnerabilities 3

  • High 7.5

    BIND's database will be slow if a very large number of RRs exist at the same name

    Resolver caches and authoritative zone databases that hold significant numbers of RRs for the same hostname (of any RTYPE) can suffer from degraded performance as content is being added or updated, and also when handling client queries for this name. This iss…

  • High 7.5

    SIG(0) can be used to exhaust CPU resources

    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 aff…

  • High 7.5

    Assertion failure when serving both stale cache data and authoritative zone content

    Client queries that trigger serving stale data and that also require lookups in local authoritative zone data may result in an assertion failure. This issue affects BIND 9 versions 9.16.13 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.…