CVE-2011-3581
Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-3581- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-3581- Updated
- 2026-11-02
EUVDEUVD-2011-3544 No score
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.
- Record
EUVD-2011-3544- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jv88-pfrr-vvgm No score
Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11...
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.
- Record
GHSA-jv88-pfrr-vvgm- Weakness
- CWE-119
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2011-3581- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-3581 No score
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.
- Record
DEBIAN-CVE-2011-3581- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10556-1 No score
ldns-1.6.17-5.7 on GA media
These are all security issues fixed in the ldns-1.6.17-5.7 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10556-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ldnsDebian:12 |
before 1.6.11-1 | 1.6.11-1 |
ldnsDebian:13 |
before 1.6.11-1 | 1.6.11-1 |
ldnsDebian:14 |
before 1.6.11-1 | 1.6.11-1 |
ldnsDebian:6.0 |
before 1.6.6-2+squeeze1, plus listed versions 1.6.6-2 |
1.6.6-2+squeeze1 |
ldnsDebian:5.0 |
before 1.4.0-1+lenny2, plus listed versions 1.4.0-11.4.0-1+lenny1 |
1.4.0-1+lenny2 |
ldnsopenSUSE:Tumbleweed |
before 1.6.17-5.7 | 1.6.17-5.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-3581 is a medium vulnerability (CVSS 6.8) in Nlnetlabs Ldns, published November 4, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.11%, the 90th percentile. Fixed in ldns 1.6.11-1.
References
secunia.com/advisories/46476
securityfocus.com/bid/49748
seclists.org/oss-sec/2011/q3/542
lists.fedoraproject.org/pipermail/package-announce/2011-October/068239.html
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nlnetlabs.nl/bugs-script/show_bug.cgi?id=403
nlnetlabs.nl/svn/ldns/tags/release-1.6.11/Changelog
lists.opensuse.org/opensuse-security-announce/2011-10/msg00008.html
nvd.nist.gov/vuln/detail/CVE-2011-3581
github.com/advisories/GHSA-jv88-pfrr-vvgm
security-tracker.debian.org/tracker/CVE-2011-3581
suse.com/security/cve/CVE-2011-3581