CVE-2022-26377
Published: 09 June 2022
Summary
CVE-2022-26377 is a high-severity HTTP Request/Response Smuggling (CWE-444) vulnerability in Fedoraproject Fedora. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 3.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-26377 is an HTTP Request Smuggling vulnerability arising from inconsistent interpretation of HTTP requests in the mod_proxy_ajp module of Apache HTTP Server. The flaw affects version 2.4.53 and all prior 2.4 releases, allowing crafted requests to be forwarded inconsistently to an AJP backend.
An unauthenticated remote attacker can send specially formed HTTP requests that are interpreted differently by the Apache proxy and the AJP server. Successful exploitation permits request smuggling, which can be leveraged to bypass access controls, poison caches, or hijack client sessions, resulting in high-integrity impact without requiring user interaction.
Apache HTTP Server security advisories and downstream distributions such as Fedora and Gentoo direct administrators to apply the fixes released in version 2.4.54 or later; the referenced vendor pages list the patched builds and backport information for supported platforms.
The EPSS score rose from a low baseline to a peak of 0.3988, indicating that exploitation interest increased after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-30936
Vulnerability details
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version…
more
2.4.53 and prior versions.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.