CVE-2011-4528
UnknownEPSS 2.94%
Last modified
CVE-2011-4528 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.94% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Unbound | Unbound | <= 1.4.13 | — |
| Unbound | Unbound | 0.0 | — |
| Unbound | Unbound | 0.1 | — |
| Unbound | Unbound | 0.2 | — |
| Unbound | Unbound | 0.3 | — |
| Unbound | Unbound | 0.4 | — |
| Unbound | Unbound | 0.5 | — |
| Unbound | Unbound | 0.6 | — |
| Unbound | Unbound | 0.7 | — |
| Unbound | Unbound | 0.7.1 | — |
| Unbound | Unbound | 0.7.2 | — |
| Unbound | Unbound | 0.8 | — |
| Unbound | Unbound | 0.09 | — |
| Unbound | Unbound | 0.10 | — |
| Unbound | Unbound | 0.11 | — |
| Unbound | Unbound | 1.0.0 | — |
| Unbound | Unbound | 1.0.1 | — |
| Unbound | Unbound | 1.0.2 | — |
| Unbound | Unbound | 1.1.0 | — |
| Unbound | Unbound | 1.1.1 | — |
| Unbound | Unbound | 1.2.0 | — |
| Unbound | Unbound | 1.2.1 | — |
| Unbound | Unbound | 1.3.0 | — |
| Unbound | Unbound | 1.3.1 | — |
| Unbound | Unbound | 1.3.2 | — |
| Unbound | Unbound | 1.3.3 | — |
| Unbound | Unbound | 1.3.4 | — |
| Unbound | Unbound | 1.4.0 | — |
| Unbound | Unbound | 1.4.1 | — |
| Unbound | Unbound | 1.4.2 | — |
| Unbound | Unbound | 1.4.3 | — |
| Unbound | Unbound | 1.4.4 | — |
| Unbound | Unbound | 1.4.5 | — |
| Unbound | Unbound | 1.4.6 | — |
| Unbound | Unbound | 1.4.7 | — |
| Unbound | Unbound | 1.4.8 | — |
| Unbound | Unbound | 1.4.9 | — |
| Unbound | Unbound | 1.4.10 | — |
| Unbound | Unbound | 1.4.11 | — |
| Unbound | Unbound | 1.4.12 | — |
| Unbound | Unbound | 1.4.14 | Rc1 |
References
- http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txtPatch, Vendor Advisory
- http://www.kb.cert.org/vuls/id/209659Patch, Third Party Advisory, US Government Resource
- http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txtPatch, Vendor Advisory
- http://www.kb.cert.org/vuls/id/209659Patch, Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2011-4528?
Severity scoring for CVE-2011-4528 is pending analysis. The EPSS model estimates a 2.94% probability of exploitation in the next 30 days.
How do I fix CVE-2011-4528?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2011-4528?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST