Description
Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack/ ↗
- https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html ↗
- http://www.openwall.com/lists/oss-security/2020/05/19/2 ↗
- http://cyber-security-group.cs.tau.ac.il/# ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ/ ↗
- https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html ↗