The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21 does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an initial @ (at sign) character.
CVSS Details
- CVSS 3.1 Base Score: 7.5
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade apache2 | Aug 30, 2017 | Oct 5, 2011 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Apr 12, 2012 | Oct 5, 2011 |
| Apple Osx Apache | — | Upgrade macOS to the latest versionApply OS X security update 2012-004 | Sep 27, 2012 | Oct 5, 2011 |
| Apple Osx Note | — | Upgrade macOS to the latest versionApply OS X security update 2012-004 | Aug 28, 2015 | Oct 5, 2011 |
| Centos_linux | — | Upgrade httpd-suexecUpgrade mod_sslUpgrade httpdUpgrade httpd-manualUpgrade httpd-devel | Dec 1, 2016 | Oct 5, 2011 |
| Debian | — | Upgrade apache2 | Jul 30, 2024 | Oct 5, 2011 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Aug 3, 2015 |
| Freebsd | — | Upgrade apache+mod_ssl+ipv6Upgrade ru-apache-1.3Upgrade apache+ipv6Upgrade apache+mod_perlUpgrade apacheUpgrade ru-apache+mod_sslUpgrade apache+mod_sslUpgrade apache+ssl | Dec 10, 2025 | Nov 14, 2011 |
| Gentoo Linux | — | Upgrade www-servers/apache. | Oct 30, 2017 | Oct 5, 2011 |
| Hpsmh | — | Upgrade to the latest version of HP System Management Homepage | Oct 13, 2015 | Oct 5, 2011 |
| Ibm Http_server | — | Apply IBM HTTP Server version 8.0.0.3 or later | Jun 22, 2018 | Oct 5, 2011 |
| Oracle_linux | — | Upgrade httpdUpgrade mod_sslUpgrade httpd-manualUpgrade httpd-develUpgrade httpd-tools | Oct 16, 2024 | Oct 5, 2011 |
| Suse | — | Upgrade apache2-example-certificatesUpgrade apache2-docUpgrade apache2-itkUpgrade apache2-itk-debuginfoUpgrade apache2-utils-debuginfoUpgrade apache2-develUpgrade apache2-worker-debuginfoUpgrade apache2-event-debuginfoUpgrade apache2-prefork-debuginfoUpgrade apache2-preforkUpgrade apache2-debugsourceUpgrade apache2Upgrade apache2-debuginfoUpgrade apache2-eventUpgrade apache2-workerUpgrade apache2-example-pagesUpgrade apache2-utils | Feb 17, 2015 | Oct 5, 2011 |
| Ubuntu | — | Upgrade apache2.2-binUpgrade apache2.2-commonUpgrade apache2-mpm-itk | Nov 8, 2024 | Oct 5, 2011 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub