Description
Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.
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
- http://www.debian.org/security/2017/dsa-3910 ↗
- http://www.securityfocus.com/bid/99598 ↗
- https://bugs.debian.org/865678 ↗
- http://www.synacktiv.ninja/ressources/Knot_DNS_TSIG_Signature_Forgery.pdf ↗
- https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00078.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00076.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00089.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00049.html ↗