Homepage
About Snyk

HTTP Request Smuggling Affecting apache2 package, versions <2.4.54-2ubuntu1.2

medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.74% (81st percentile)
Expand this section
NVD
9.8 critical
Expand this section
SUSE
7.5 high
Expand this section
Red Hat
9.8 critical

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-UBUNTU2210-APACHE2-3355688
  • published 8 Mar 2023
  • disclosed 7 Mar 2023
Report a new vulnerability Found a mistake?

Introduced: 7 Mar 2023

CVE-2023-25690 Open this link in a new tab
CWE-444 Open this link in a new tab

How to fix?

Upgrade Ubuntu:22.10 apache2 to version 2.4.54-2ubuntu1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2 package and not the apache2 package as distributed by Ubuntu. See How to fix? for Ubuntu:22.10 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.