vulnerability
Apache HTTPD: Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier (CVE-2021-44224)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:N/I:P/A:P) | Dec 20, 2021 | Jan 6, 2022 | Jul 2, 2025 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:P)
Published
Dec 20, 2021
Added
Jan 6, 2022
Modified
Jul 2, 2025
Description
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). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).
Solution
apache-httpd-upgrade-latest
References
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