CVE-2011-4528

Unbound before 1.4.13p2 attempts to free unallocated memory during processing of duplicate CNAME records in a signed zone, which allows remote DNS servers to cause a denial of service (daemon crash) via a crafted response.

• CWE-399

• https://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html
• https://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html
• https://osvdb.org/77909
• https://secunia.com/advisories/47326
• https://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txtPatch, Vendor Advisory
• https://www.debian.org/security/2011/dsa-2370
• https://www.kb.cert.org/vuls/id/209659Patch, Third Party Advisory, US Government Resource
• https://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html
• https://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html
• https://osvdb.org/77909
• https://secunia.com/advisories/47326
• https://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txtPatch, Vendor Advisory
• https://www.debian.org/security/2011/dsa-2370
• https://www.kb.cert.org/vuls/id/209659Patch, Third Party Advisory, US Government Resource

Published

Dec 20, 2011

Last Modified

Jun 16, 2026

Status

Modified

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