CVE-2016-0747 Details
Description
The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.
A denial-of-service vulnerability has been identified in nginx versions prior to 1.8.1 and in the 1.9.x branch prior to 1.9.10. The issue arises in the resolver component, where CNAME resolution is not properly limited. This flaw allows remote attackers to cause excessive resource consumption in worker processes by triggering arbitrary name resolutions. The vulnerability is exploitable only if the 'resolver' directive is used in the nginx configuration.
Users can upgrade to nginx versions 1.8.1 or 1.9.10 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| f5 nginx | >= 0.6.18, < 1.8.1 >= 1.9.0, < 1.9.10 |
CPE
Remediation
| |
| canonical ubuntu linux | 14.04 15.10 |
CPE
Remediation
| |
| debian debian linux | 7.0 8.0 9.0 |
CPE
Remediation
| |
| opensuse leap | 42.1 |
CPE
Remediation
| |
| apple xcode | < 13.0 |
CPE
Remediation
| |
Change History
17 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 6, 2026 | Status Change | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Dec 16, 2021 | Modified Analysis | [email protected] |
| Nov 10, 2021 | CPE Deprecation Remap | [email protected] |
| Nov 10, 2021 | CPE Deprecation Remap | [email protected] |
| Sep 22, 2021 | CVE Modified | [email protected] |
| Sep 20, 2021 | CVE Modified | [email protected] |
| Nov 16, 2020 | Modified Analysis | [email protected] |
| Oct 30, 2018 | CPE Deprecation Remap | [email protected] |
| Jan 5, 2018 | CVE Modified | [email protected] |
| Jul 1, 2017 | CVE Modified | [email protected] |
| Dec 6, 2016 | CVE Modified | [email protected] |
| Dec 3, 2016 | CVE Modified | [email protected] |
| Mar 17, 2016 | Modified Analysis | [email protected] |
| Mar 17, 2016 | Initial Analysis | [email protected] |