QID 730096

Date Published: 2021-06-09

QID 730096: Nginx Arbitrary Code Execution Vulnerability

nginx [engine x] is an HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server.

A security issue in nginx resolver was identified, which might allow an attacker to cause 1-byte memory overwrite by using a specially crafted DNS response

Affected Versions:
NGINX version from 0.6.18 to 1.20.0

QID Detection Logic (Unauthenticated):
The unauthenticated check tries to fetch the version from the version exposed in the Server: tag of a HTTP response.

Successful exploitation may lead to arbitrary code execution.

CVSS V3 rated as High - 7.3 severity.

CVSS V2 rated as High - 7.5 severity.

Solution

Customers are advised to install nginx 1.21.0, 1.20.1 to remediate this vulnerability.

Vendor References

Nginx - nginx.org/en/security_advisories.html

CVEs related to QID 730096

CVE-2021-23017 |

Software Advisories

Advisory ID	Software	Component	Link
Nginx			nginx.org/en/security_advisories.html

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