#VU44440 Resource management error in Unbound - CVE-2011-4869 

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Main Vulnerability Database Vulnerabilities #VU44440

#VU44440 Resource management error in Unbound - CVE-2011-4869

Published: December 20, 2011 / Updated: August 11, 2020


Vulnerability identifier: #VU44440
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-4869
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Unbound
Software vendor:
NLnet Labs

Description

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

validator/val_nsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service (daemon crash) via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528.


Remediation

Install update from vendor's website.

External links