QID 730313

Date Published: 2021-12-23

QID 730313: Apache Hypertext Transfer Protocol (HTTP) Server NULL Pointer Dereference and Server Side Request Forgery (SSRF) Vulnerability

Apache HTTP Server is a free and open-source cross-platform web server software, released under the terms of Apache License 2.0.

A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery).

Affected Versions:
Apache HTTP Server 2.4.7 - 2.4.51

QID Detection Logic:(Unauthenticated)
This QID checks for vulnerable Apache Version by grabbing the banner from HTTP response

Successful exploitation of the vulnerability may allow an attacker to redirect victim to a malicious server.

CVSS V3 rated as Critical - 8.2 severity.

CVSS V2 rated as High - 6.4 severity.

Solution

Customers are advised to update to Apache HTTP Server 2.4.52 or later. For more information, check Apache Security Advisory

Vendor References

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

CVEs related to QID 730313

CVE-2021-44224 |

Software Advisories

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

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