#VU78292 Resource exhaustion in Knot Resolver - CVE-2022-40188 

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Main Vulnerability Database Vulnerabilities #VU78292

#VU78292 Resource exhaustion in Knot Resolver - CVE-2022-40188

Published: July 16, 2023


Vulnerability identifier: #VU78292
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-40188
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Knot Resolver
Software vendor:
Nic

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources caused by algorithmic complexity. A malicious authoritative server can return large NS sets or addresses and cause excessive CPU consumption. 


Remediation

Install updates from vendor's website.

External links