SB2012010803 - Input validation error in MaraDNS
Published: January 8, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012010803
Severity
Medium
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) Input validation error (CVE-ID: CVE-2012-0024)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
MaraDNS before 1.3.07.12 and 1.4.x before 1.4.08 computes hash values for DNS data without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted queries with the Recursion Desired (RD) bit set.
Remediation
Install update from vendor's website.