The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directives by placing a header in the trailer portion of data sent with chunked transfer coding. NOTE: the vendor states "this is not a security issue in httpd as such."
CVSS Details
- CVSS 3.1 Base Score: 9.1
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Sep 4, 2014 | Apr 15, 2014 |
| Apple Osx Adminframework | — | Apply OS X security update 2015-004Upgrade macOS to the latest version | Aug 28, 2015 | Apr 15, 2014 |
| Apple Osx Apache | — | Upgrade macOS to the latest versionApply OS X security update 2015-004 | Mar 29, 2016 | Apr 15, 2014 |
| Debian | — | Upgrade apache2 | Jul 30, 2024 | Apr 15, 2014 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Jul 7, 2015 |
| Freebsd | — | Upgrade apache22-worker-mpmUpgrade apache22-itk-mpmUpgrade apache22-peruser-mpmUpgrade apache22-event-mpmUpgrade apache22Upgrade apache24 | Dec 10, 2025 | Jul 24, 2014 |
| Gentoo Linux | — | Upgrade www-servers/apache. | Oct 30, 2017 | Apr 15, 2014 |
| Hpux | — | Update hpuxws22APACHE.APACHE to the latest versionUpdate hpuxws22APCH32.PHP to the latest versionUpdate hpuxws22APCH32.AUTH_LDAP to the latest versionUpdate hpuxws22APACHE.MOD_JK to the latest versionUpdate hpuxws22APCH32.APACHE to the latest versionUpdate hpuxws22TOMCAT.TOMCAT to the latest versionUpdate hpuxws22APACHE.AUTH_LDAP to the latest versionUpdate hpuxws22APCH32.WEBPROXY to the latest versionUpdate hpuxws22APACHE.WEBPROXY2 to the latest versionUpdate hpuxws22APACHE.WEBPROXY to the latest versionUpdate hpuxws22APACHE.PHP2 to the latest versionUpdate hpuxws22APCH32.AUTH_LDAP2 to the latest versionUpdate hpuxws22APCH32.APACHE2 to the latest versionUpdate hpuxws22APACHE.APACHE2 to the latest versionUpdate hpuxws22APCH32.PHP2 to the latest versionUpdate hpuxws22APCH32.MOD_JK2 to the latest versionUpdate hpuxws22APCH32.MOD_JK to the latest versionUpdate hpuxws22APCH32.MOD_PERL to the latest versionUpdate hpuxws22APACHE.AUTH_LDAP2 to the latest versionUpdate hpuxws22APACHE.MOD_PERL2 to the latest versionUpdate hpuxws22APACHE.PHP to the latest versionUpdate hpuxws22APCH32.WEBPROXY2 to the latest versionUpdate hpuxws22APACHE.MOD_PERL to the latest versionUpdate hpuxws22APACHE.MOD_JK2 to the latest versionUpdate hpuxws22APCH32.MOD_PERL2 to the latest version | Aug 11, 2017 | Apr 15, 2014 |
| Ibm Http_server | — | Apply IBM HTTP Server Interim Fix PI22070Apply IBM HTTP Server version 8.0.0.10 or laterApply IBM HTTP Server version 8.5.5.4 or later | Jun 22, 2018 | Apr 15, 2014 |
| Oracle Solaris | — | Upgrade entire/ to version 11.4-11.4.0.0.1.15.0 on Solaris 11.4Upgrade web/server/apache-22 to version 2.2.29-0.175.2.6.0.2.0 on Solaris 11.2 | May 29, 2017 | Apr 15, 2014 |
| Oracle_linux | — | Upgrade httpd-develUpgrade httpd-manualUpgrade httpdUpgrade mod_sslUpgrade httpd-tools | Oct 16, 2024 | Apr 15, 2014 |
| Red Hat Jboss Eap | — | — | Sep 19, 2024 | Oct 19, 2013 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Oct 19, 2013 |
| Suse | — | Upgrade apache2-itkUpgrade apache2-docUpgrade apache2-develUpgrade apache2-example-pagesUpgrade apache2-preforkUpgrade apache2-workerUpgrade apache2-utilsUpgrade apache2-eventUpgrade apache2 | Jan 5, 2015 | Apr 15, 2014 |
| Ubuntu | — | Upgrade apache2.2-bin | Nov 8, 2024 | Apr 15, 2014 |
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