SB2023032942 - Denial of service in PowerDNS Recursor
Published: March 29, 2023
Security Bulletin ID
SB2023032942
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Insufficient verification of data authenticity (CVE-ID: CVE-2023-26437)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the code responsible for protection against spoofing attacks. A remote attacker can send specially crafted DNS queries with spoofed IP address to force the PowerDNS Recursor to mark specific authoritative servers as not available, leading to a denial of service condition.
Remediation
Install update from vendor's website.