Apache HTTP Server: HTTP request splitting with mod_rewrite and mod_proxy (Apache Software Foundation Apache HTTP Server)
At a glance
- Source
- NVD
- EPSS
- EPSS 84.51 % · percentile 100 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Modified
Description
Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, something like: RewriteEngine on RewriteRule "^/here/(.*)" "http://example.com:8080/elsewhere?$1"; [P] ProxyPassReverse /here/ http://example.com:8080/ Request splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version 2.4.56 of Apache HTTP Server.
Weaknesses (CWE)
- CWE-444 — Inconsistent Interpretation of HTTP Requests
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2023-29605
- GCVE · GCVE-0-2023-25690
CERT-FR advisories
- CERTFR-2024-AVI-0575 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0119 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0705 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0490 — Multiples vulnérabilités dans NetApp ONTAP · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0418 — Multiples vulnérabilités dans Zimbra · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0267 — Multiples vulnérabilités dans Tenable.sc · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0254 — Multiples vulnérabilités dans Tenable.sc · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0200 — Multiples vulnérabilités dans Apache HTTP Server · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*≥ 2.4.0 ≤ 2.4.55
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache HTTP Server | affected 2.4.0 ≤ 2.4.55 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |