Input validation error in MaraDNS - CVE-2011-5056
Published: January 8, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44411
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-5056
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Sam Trenholme
Affected software:
MaraDNS
MaraDNS
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The authoritative server in MaraDNS through 2.0.04 computes hash values for DNS data without restricting the ability to trigger hash collisions predictably, which might allow local users to cause a denial of service (CPU consumption) via crafted records in zone files, a different vulnerability than CVE-2012-0024.
How to mitigate CVE-2011-5056
Install update from vendor's website.