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CVE-2023-25690

CVE-2023-25690 · Apache HTTP Server: HTTP request splitting with mod_rewrite and mod_proxy

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.8 · Critical · EPSS 84.5% · Public exploit · Fix available

Published
Updated

Stack: system · web

Affected products and versions

  • apache httpd

    Versions
    • ≥ 2.4.0, ≤ 2.4.55: Affected (semver)

    No fix published

  • apache2 Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.4.56-1

    Update to 2.4.56-1

  • apache2 Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.4.56-1

    Update to 2.4.56-1

  • apache2 Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.4.56-1

    Update to 2.4.56-1

  • apache2 Ubuntu:Pro:14.04:LTS

    Versions
    • 2.4.6-2ubuntu2
    • 2.4.6-2ubuntu3
    • 2.4.6-2ubuntu4
    • 2.4.7-1ubuntu1
    • 2.4.7-1ubuntu2
    • 2.4.7-1ubuntu3
    • 2.4.7-1ubuntu4
    • 2.4.7-1ubuntu4.1
    • 2.4.7-1ubuntu4.4
    • 2.4.7-1ubuntu4.5
    • 2.4.7-1ubuntu4.6
    • 2.4.7-1ubuntu4.7
    • 2.4.7-1ubuntu4.8
    • 2.4.7-1ubuntu4.9
    • 2.4.7-1ubuntu4.10
    • 2.4.7-1ubuntu4.11
    • 2.4.7-1ubuntu4.13
    • 2.4.7-1ubuntu4.15
    • 2.4.7-1ubuntu4.16
    • 2.4.7-1ubuntu4.17
    • 2.4.7-1ubuntu4.18
    • 2.4.7-1ubuntu4.19
    • 2.4.7-1ubuntu4.20
    • 2.4.7-1ubuntu4.21
    • 2.4.7-1ubuntu4.22
    • 2.4.7-1ubuntu4.22+esm1
    • 2.4.7-1ubuntu4.22+esm2
    • 2.4.7-1ubuntu4.22+esm3
    • 2.4.7-1ubuntu4.22+esm4
    • 2.4.7-1ubuntu4.22+esm5
    • 2.4.7-1ubuntu4.22+esm6
    • 2.4.7-1ubuntu4.22+esm8
    • 2.4.7-1ubuntu4.22+esm9
    • 2.4.7-1ubuntu4.22+esm10
    • 2.4.7-1ubuntu4.22+esm12
    • 2.4.7-1ubuntu4.22+esm13
    • 2.4.7-1ubuntu4.22+esm14
    • 2.4.7-1ubuntu4.22+esm15
    • 2.4.7-1ubuntu4.22+esm16
    • 2.4.7-1ubuntu4.22+esm17
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • apache2 Ubuntu:Pro:16.04:LTS

    Versions
    • 2.4.12-2ubuntu2
    • 2.4.17-1ubuntu1
    • 2.4.17-2ubuntu1
    • 2.4.17-3ubuntu1
    • 2.4.18-1ubuntu1
    • 2.4.18-2ubuntu1
    • 2.4.18-2ubuntu2
    • 2.4.18-2ubuntu3
    • 2.4.18-2ubuntu3.1
    • 2.4.18-2ubuntu3.2
    • 2.4.18-2ubuntu3.3
    • 2.4.18-2ubuntu3.4
    • 2.4.18-2ubuntu3.5
    • 2.4.18-2ubuntu3.7
    • 2.4.18-2ubuntu3.8
    • 2.4.18-2ubuntu3.9
    • 2.4.18-2ubuntu3.10
    • 2.4.18-2ubuntu3.12
    • 2.4.18-2ubuntu3.13
    • 2.4.18-2ubuntu3.14
    • 2.4.18-2ubuntu3.15
    • 2.4.18-2ubuntu3.17
    • 2.4.18-2ubuntu3.17+esm1
    • 2.4.18-2ubuntu3.17+esm2
    • 2.4.18-2ubuntu3.17+esm3
    • 2.4.18-2ubuntu3.17+esm4
    • 2.4.18-2ubuntu3.17+esm5
    • 2.4.18-2ubuntu3.17+esm6
    • 2.4.18-2ubuntu3.17+esm7
    • 2.4.18-2ubuntu3.17+esm8
    • 2.4.18-2ubuntu3.17+esm9
    Affected ranges
    • ECOSYSTEM: < 2.4.18-2ubuntu3.17+esm10

    Update to 2.4.18-2ubuntu3.17+esm10

  • apache2 Ubuntu:18.04:LTS

    Versions
    • 2.4.27-2ubuntu3
    • 2.4.29-1ubuntu1
    • 2.4.29-1ubuntu2
    • 2.4.29-1ubuntu3
    • 2.4.29-1ubuntu4
    • 2.4.29-1ubuntu4.1
    • 2.4.29-1ubuntu4.2
    • 2.4.29-1ubuntu4.3
    • 2.4.29-1ubuntu4.4
    • 2.4.29-1ubuntu4.5
    • 2.4.29-1ubuntu4.6
    • 2.4.29-1ubuntu4.7
    • 2.4.29-1ubuntu4.8
    • 2.4.29-1ubuntu4.10
    • 2.4.29-1ubuntu4.11
    • 2.4.29-1ubuntu4.12
    • 2.4.29-1ubuntu4.13
    • 2.4.29-1ubuntu4.14
    • 2.4.29-1ubuntu4.16
    • 2.4.29-1ubuntu4.17
    • 2.4.29-1ubuntu4.18
    • 2.4.29-1ubuntu4.19
    • 2.4.29-1ubuntu4.20
    • 2.4.29-1ubuntu4.21
    • 2.4.29-1ubuntu4.22
    • 2.4.29-1ubuntu4.23
    • 2.4.29-1ubuntu4.24
    • 2.4.29-1ubuntu4.25
    • 2.4.29-1ubuntu4.26
    Affected ranges
    • ECOSYSTEM: < 2.4.29-1ubuntu4.27

    Update to 2.4.29-1ubuntu4.27

  • apache2 Ubuntu:20.04:LTS

    Versions
    • 2.4.41-1ubuntu1
    • 2.4.41-4ubuntu1
    • 2.4.41-4ubuntu2
    • 2.4.41-4ubuntu3
    • 2.4.41-4ubuntu3.1
    • 2.4.41-4ubuntu3.3
    • 2.4.41-4ubuntu3.4
    • 2.4.41-4ubuntu3.5
    • 2.4.41-4ubuntu3.6
    • 2.4.41-4ubuntu3.7
    • 2.4.41-4ubuntu3.8
    • 2.4.41-4ubuntu3.9
    • 2.4.41-4ubuntu3.10
    • 2.4.41-4ubuntu3.11
    • 2.4.41-4ubuntu3.12
    • 2.4.41-4ubuntu3.13
    Affected ranges
    • ECOSYSTEM: < 2.4.41-4ubuntu3.14

    Update to 2.4.41-4ubuntu3.14

  • apache2 Ubuntu:22.04:LTS

    Versions
    • 2.4.48-3.1ubuntu3
    • 2.4.48-3.1ubuntu4
    • 2.4.51-2ubuntu1
    • 2.4.52-1ubuntu1
    • 2.4.52-1ubuntu2
    • 2.4.52-1ubuntu4
    • 2.4.52-1ubuntu4.1
    • 2.4.52-1ubuntu4.2
    • 2.4.52-1ubuntu4.3
    Affected ranges
    • ECOSYSTEM: < 2.4.52-1ubuntu4.4

    Update to 2.4.52-1ubuntu4.4

Original sources

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