CVE-2021-44224
Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier
- State
- Published
- Severity
- Not scored
- Published
- Dec 20, 2021
- Updated
- Aug 4, 2024
- Reserved
- Nov 25, 2021
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).
Scores
The record has no CVSS score.
Weaknesses
- CWE-476 NULL Pointer Dereference
Affected Products
| Product | Versions |
|---|---|
Apache HTTP ServerApache Software Foundation |
|
References
- http://httpd.apache.org/security/vulnerabilities_24.html
- [oss-security] 20211220 CVE-2021-44224: Apache HTTP Server: Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earliermailing-list
- FEDORA-2021-29a536c2aevendor-advisory
- DSA-5035vendor-advisory
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://security.netapp.com/advisory/ntap-20211224-0001/
- https://www.tenable.com/security/tns-2022-01
- https://www.tenable.com/security/tns-2022-03
- FEDORA-2022-b4103753e9vendor-advisory
- FEDORA-2022-21264ec6dbvendor-advisory
- FEDORA-2022-78e3211c55vendor-advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://support.apple.com/kb/HT213257
- https://support.apple.com/kb/HT213256
- https://support.apple.com/kb/HT213255
- 20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalinamailing-list
- 20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6mailing-list
- 20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4mailing-list
- GLSA-202208-20vendor-advisory
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