Vulnerability Report

CVE-2011-3581

Title: Nlnetlabs Ldns RCE

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2011-3581.

CWE Category CWE-119

Published Date Nov 04, 2011

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 6.8 CVSS v2.0

Exploit Probability (EPSS)

4.11%

Vulnerability Summary

CVE-2011-3581: Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a Resource Record (RR) with an unknown type containing input that is longer than a specified length.

Impacted Vendors

nlnetlabs 1

Reference Links

http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068091.html http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068201.html http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068239.html http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00008.html http://nlnetlabs.nl/svn/ldns/tags/release-1.6.11/Changelog http://seclists.org/oss-sec/2011/q3/503 http://seclists.org/oss-sec/2011/q3/542 http://secunia.com/advisories/46470 http://secunia.com/advisories/46476 http://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=403 http://www.securityfocus.com/bid/49748 http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068091.html http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068201.html http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068239.html http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00008.html http://nlnetlabs.nl/svn/ldns/tags/release-1.6.11/Changelog http://seclists.org/oss-sec/2011/q3/503 http://seclists.org/oss-sec/2011/q3/542 http://secunia.com/advisories/46470 http://secunia.com/advisories/46476 http://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=403 http://www.securityfocus.com/bid/49748

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

6.8

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-3581 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

November 04, 2011 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Stack

No specific products linked.