CVE-2011-4528
Summary
| CVE | CVE-2011-4528 |
|---|---|
| State | PUBLISHED |
| Assigner | certcc |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2011-12-20 11:55:05 UTC |
| Updated | 2026-04-29 01:13:23 UTC |
| Description | 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. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:N/AC:L/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Unbound | Unbound | 0.0 | All | All | All |
| Application | Unbound | Unbound | 0.09 | All | All | All |
| Application | Unbound | Unbound | 0.1 | All | All | All |
| Application | Unbound | Unbound | 0.10 | All | All | All |
| Application | Unbound | Unbound | 0.11 | All | All | All |
| Application | Unbound | Unbound | 0.2 | All | All | All |
| Application | Unbound | Unbound | 0.3 | All | All | All |
| Application | Unbound | Unbound | 0.4 | All | All | All |
| Application | Unbound | Unbound | 0.5 | All | All | All |
| Application | Unbound | Unbound | 0.6 | All | All | All |
| Application | Unbound | Unbound | 0.7 | All | All | All |
| Application | Unbound | Unbound | 0.7.1 | All | All | All |
| Application | Unbound | Unbound | 0.7.2 | All | All | All |
| Application | Unbound | Unbound | 0.8 | All | All | All |
| Application | Unbound | Unbound | 1.0.0 | All | All | All |
| Application | Unbound | Unbound | 1.0.1 | All | All | All |
| Application | Unbound | Unbound | 1.0.2 | All | All | All |
| Application | Unbound | Unbound | 1.1.0 | All | All | All |
| Application | Unbound | Unbound | 1.1.1 | All | All | All |
| Application | Unbound | Unbound | 1.2.0 | All | All | All |
| Application | Unbound | Unbound | 1.2.1 | All | All | All |
| Application | Unbound | Unbound | 1.3.0 | All | All | All |
| Application | Unbound | Unbound | 1.3.1 | All | All | All |
| Application | Unbound | Unbound | 1.3.2 | All | All | All |
| Application | Unbound | Unbound | 1.3.3 | All | All | All |
| Application | Unbound | Unbound | 1.3.4 | All | All | All |
| Application | Unbound | Unbound | 1.4.0 | All | All | All |
| Application | Unbound | Unbound | 1.4.1 | All | All | All |
| Application | Unbound | Unbound | 1.4.10 | All | All | All |
| Application | Unbound | Unbound | 1.4.11 | All | All | All |
| Application | Unbound | Unbound | 1.4.12 | All | All | All |
| Application | Unbound | Unbound | 1.4.14 | rc1 | All | All |
| Application | Unbound | Unbound | 1.4.2 | All | All | All |
| Application | Unbound | Unbound | 1.4.3 | All | All | All |
| Application | Unbound | Unbound | 1.4.4 | All | All | All |
| Application | Unbound | Unbound | 1.4.5 | All | All | All |
| Application | Unbound | Unbound | 1.4.6 | All | All | All |
| Application | Unbound | Unbound | 1.4.7 | All | All | All |
| Application | Unbound | Unbound | 1.4.8 | All | All | All |
| Application | Unbound | Unbound | 1.4.9 | All | All | All |
| Application | Unbound | Unbound | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| US-CERT Vulnerability Note VU#209659 - Unbound multiple denial-of-service vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Patch, Third Party Advisory, US Government Resource |
| unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt | af854a3a-2127-422b-91ae-364da2661108 | unbound.nlnetlabs.nl | Patch, Vendor Advisory |
| Debian -- Security Information -- DSA-2370-1 unbound | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| [SECURITY] Fedora 15 Update: unbound-1.4.14-1.fc15 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| Security Alerts - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| osvdb.org/77909 | af854a3a-2127-422b-91ae-364da2661108 | osvdb.org | |
| [SECURITY] Fedora 16 Update: unbound-1.4.14-1.fc16 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.