Input validation error in Knot Resolver - CVE-2018-1000002
Published: January 22, 2018 / Updated: July 17, 2020
Vulnerability identifier: #VU31360
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-1000002
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Improper input validation bugs in DNSSEC validators components in Knot Resolver (prior version 1.5.2) allow attacker in man-in-the-middle position to deny existence of some data in DNS via packet replay.
Affected software
Knot Resolver
Fedora
knot-resolver
Fedora
knot-resolver
How to mitigate CVE-2018-1000002
Install update from vendor's website.
Knot Resolver - update to 1.5.2
knot-resolver - addressed in versions 1.5.3-1.el7, 1.5.3-1.fc26, 1.5.3-1.fc27, 2.1.0-1.el7, 2.1.0-1.fc26, 2.1.0-1.fc27
knot-resolver - addressed in versions 1.5.3-1.el7, 1.5.3-1.fc26, 1.5.3-1.fc27, 2.1.0-1.el7, 2.1.0-1.fc26, 2.1.0-1.fc27