Improper input validation in Knot-Dns Knot Dns
CVE-2017-11104
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.027 (84.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Knot-dns Knot_dns — versions 2.5.0, 2.5.1
- Debian Debian_linux — versions 8.0, 9.0, 10.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (vdb-entry, Broken Link, x_refsource_BID)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Mitigation)
- cve@mitre.org (Patch, Mailing List, Third Party Advisory, x_refsource_MISC, Broken Link)
- cve@mitre.org (vendor-advisory, Broken Link, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, Broken Link, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, Broken Link, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, Broken Link, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2017-11104?
- CVE-2017-11104 is a medium-severity vulnerability in Knot-Dns Knot Dns, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2017-07-08.
- How severe is CVE-2017-11104?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2017-11104 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.