CVE-2017-11104
MEDIUM 5.9EPSS 2.7%
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.
- CVSS v3.1 NVD
- 5.9 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS v2.0 NVD
- 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N - EPSS
- 2.68% chance of exploitation in the next 30 days, 86th percentile
- Published
- 2017-07-08
- Updated
- 2024-08-05
Proof-of-concept exploits (1)
- saaph/CVE-2017-31431★ · 2019-07-10
Security advisories
- http://www.debian.org/security/2017/dsa-3910
- http://www.synacktiv.ninja/ressources/Knot_DNS_TSIG_Signature_Forgery.pdf
- https://bugs.debian.org/865678
- https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html
- http://www.securityfocus.com/bid/99598