Vulnerability 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).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | >= 2.4.7, < 2.4.52 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 10.0 |
| Tenable | Tenable.Sc | >= 5.14.0, < 5.20.0 |
| Oracle | Communications Element Manager | < 9.0 |
| Oracle | Communications Operations Monitor | 4.0 |
| Oracle | Communications Session Report Manager | < 9.0 |
| Oracle | Communications Session Route Manager | < 9.0 |
| Oracle | Http Server | - |
| Oracle | Instantis Enterprisetrack | 17.1 |
| Apple | Mac Os X | 10.15.7 |
| Apple | Macos | < 10.15.7 |
Related Weaknesses (CWE)
References
- http://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
- http://seclists.org/fulldisclosure/2022/May/33Mailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2022/May/35Mailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2022/May/38Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/12/20/3Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202208-20Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211224-0001/Third Party Advisory
- https://support.apple.com/kb/HT213255Third Party Advisory
- https://support.apple.com/kb/HT213256Third Party Advisory
- https://support.apple.com/kb/HT213257Third Party Advisory
- https://www.debian.org/security/2022/dsa-5035Third Party Advisory
FAQ
What is CVE-2021-44224?
CVE-2021-44224 is a vulnerability with a CVSS score of 8.2 (HIGH). 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 allo...
How severe is CVE-2021-44224?
CVE-2021-44224 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-44224?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Http Server, Fedoraproject Fedora, Debian Debian Linux, Tenable Tenable.Sc, Oracle Communications Element Manager.