Resource management error in Unbound - CVE-2011-1922
Published: May 31, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45009
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-1922
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: NLnet Labs
Affected software:
Unbound
Unbound
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
daemon/worker.c in Unbound 1.x before 1.4.10, when debugging functionality and the interface-automatic option are enabled, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted DNS request that triggers improper error handling.
How to mitigate CVE-2011-1922
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061243.html
- http://osvdb.org/72750
- http://secunia.com/advisories/44865
- http://unbound.nlnetlabs.nl/downloads/CVE-2011-1922.txt
- http://www.kb.cert.org/vuls/id/531342
- http://www.securityfocus.com/bid/47986
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67645