QID 150461

Date Published: 2022-02-03

QID 150461: Apache HTTP Server mod_proxy Server Side Request Forgery (SSRF) Vulnerability (CVE-2021-40438)

The Apache HTTP Server, colloquially called Apache, is a free and open-source cross-platform web server software.

On affected versions of Apache HTTP Server, a SSRF vulnerability exists when a remote attacker sends a crafted request uri-path which causes "mod_proxy" to forward the request to a server chosen by the attacker.

Affected Versions:
Apache HTTP Server 2.4.48 and earlier

QID Detection Logic (Unauthenticated):
This QID sends a HTTP GET request and checks the response headers to confirm the vulnerable version of Apache HTTP Server running on the application.

Successful exploitation of this vulnerability could allow a remote attacker to send specially crafted HTTP requests and trick the web server to initiate requests to arbitrary systems.

CVSS V3 rated as Critical - 9 severity.

CVSS V2 rated as High - 6.8 severity.

Solution

Customers are advised to upgrade to latest Apache HTTP Server to remediate this vulnerability. For more information related to this vulnerability please refer Apache Security advisory

Vendor References

Apache HTTP Server Security Advisory - httpd.apache.org/security/vulnerabilities_24.html

CVEs related to QID 150461

CVE-2021-40438 |

Software Advisories

Advisory ID	Software	Component	Link
Apache HTTP Server Security Advisory			httpd.apache.org/security/vulnerabilities_24.html

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