CVE-2016-0747
nginx: Insufficient limits of CNAME resolution in resolver
Severity Score
5.3
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
El traductor de direcciones en nginx en versiones anteriores a 1.8.1 y 1.9.x en versiones anteriores a 1.9.10 no limita correctamente la resolución CNAME, lo que permite a atacantes remotos provocar una denegación de servicio (consumo de recursos por el proceso trabajador) a través de vectores relacionados con la resolución de nombre arbitrario.
It was discovered that nginx did not limit recursion when resolving CNAME DNS records. An attacker able to manipulate DNS responses received by nginx could use this flaw to cause a worker process to use an excessive amount of resources if nginx enabled the resolver in its configuration.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2015-12-16 CVE Reserved
- 2016-02-10 CVE Published
- 2023-03-07 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (12)
| URL | Tag | Source |
|---|---|---|
| http://seclists.org/fulldisclosure/2021/Sep/36 | Mailing List |
|
| http://www.securitytracker.com/id/1034869 | Third Party Advisory | |
| https://bto.bluecoat.com/security-advisory/sa115 | Third Party Advisory | |
| https://support.apple.com/kb/HT212818 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1302589 | 2016-07-14 |
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.html | 2021-12-16 | |
| http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html | 2021-12-16 | |
| http://www.debian.org/security/2016/dsa-3473 | 2021-12-16 | |
| http://www.ubuntu.com/usn/USN-2892-1 | 2021-12-16 | |
| https://access.redhat.com/errata/RHSA-2016:1425 | 2021-12-16 | |
| https://security.gentoo.org/glsa/201606-06 | 2021-12-16 | |
| https://access.redhat.com/security/cve/CVE-2016-0747 | 2016-07-14 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| F5 Search vendor "F5" | Nginx Search vendor "F5" for product "Nginx" | >= 0.6.18 < 1.8.1 Search vendor "F5" for product "Nginx" and version " >= 0.6.18 < 1.8.1" | - |
Affected
| ||||||
| F5 Search vendor "F5" | Nginx Search vendor "F5" for product "Nginx" | >= 1.9.0 < 1.9.10 Search vendor "F5" for product "Nginx" and version " >= 1.9.0 < 1.9.10" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 42.1 Search vendor "Opensuse" for product "Leap" and version "42.1" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 42.1 Search vendor "Opensuse" for product "Leap" and version "42.1" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Xcode Search vendor "Apple" for product "Xcode" | < 13.0 Search vendor "Apple" for product "Xcode" and version " < 13.0" | - |
Affected
| ||||||