SB2023071616 - Denial of service in Knot Resolver

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Main Vulnerability Database SB2023071616

SB2023071616 - Denial of service in Knot Resolver

Published: July 16, 2023

Security Bulletin ID SB2023071616
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2022-40188)

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 update from vendor's website.

References