HTTP Response Splitting Affecting httpd:2.4/mod_session package, versions <0:2.4.37-51.module+el8.7.0+18499+2e106f0b.5


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1% (85th percentile)

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  • Snyk IDSNYK-RHEL8-HTTPD-5416385
  • published8 Mar 2023
  • disclosed7 Mar 2023

Introduced: 7 Mar 2023

CVE-2023-25690  (opens in a new tab)
CWE-113  (opens in a new tab)

How to fix?

Upgrade RHEL:8 httpd:2.4/mod_session to version 0:2.4.37-51.module+el8.7.0+18499+2e106f0b.5 or higher.
This issue was patched in RHSA-2023:1673.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd:2.4/mod_session package and not the httpd:2.4/mod_session package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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&#34;; [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.

CVSS Scores

version 3.1