In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade apache2 | Apr 2, 2018 | Mar 26, 2018 |
| Amazon_linux | — | Upgrade httpd24 | May 4, 2018 | Mar 23, 2018 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Mar 26, 2018 | Mar 26, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 26, 2018 |
| Centos_linux | — | Upgrade mod_sslUpgrade httpd-debuginfoUpgrade httpd-toolsUpgrade httpdUpgrade httpd-develUpgrade httpd-manualUpgrade mod_sessionUpgrade mod_ldapUpgrade mod_proxy_html | Oct 1, 2020 | Mar 26, 2018 |
| Debian | — | Upgrade apache2 | Apr 4, 2018 | Mar 23, 2018 |
| Freebsd | — | Upgrade apache22Upgrade apache24 | Mar 25, 2018 | Mar 24, 2018 |
| Hpux | — | Update hpuxwsAPACHE to the latest version | Mar 28, 2022 | Mar 26, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade mod_sslUpgrade httpd-develUpgrade httpdUpgrade httpd-toolsUpgrade httpd-manual | Dec 4, 2019 | Mar 26, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade httpdUpgrade httpd-manualUpgrade httpd-toolsUpgrade httpd-develUpgrade mod_ssl | Dec 18, 2019 | Mar 26, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade httpdUpgrade httpd-develUpgrade mod_sessionUpgrade httpd-toolsUpgrade httpd-manualUpgrade mod_ssl | Nov 19, 2019 | Mar 26, 2018 |
| Ibm Http_server | — | Apply IBM HTTP Server version 9.0.0.8 or later | Aug 6, 2018 | Mar 26, 2018 |
| Oracle Solaris | — | Upgrade web/server/apache-24/module/apache-ssl to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3Upgrade web/server/apache-24/module/apache-dbd to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3Upgrade web/server/apache-24/module/apache-ldap to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3Upgrade web/server/apache-24 to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3Upgrade web/server/apache-24/module/apache-lua to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3Upgrade web/server/apache-24/module/apache-ssl-fips-140 to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3 | May 16, 2018 | Mar 26, 2018 |
| Oracle_linux | — | Upgrade httpd-toolsUpgrade httpd-develUpgrade mod_proxy_htmlUpgrade httpdUpgrade mod_ldapUpgrade mod_sessionUpgrade mod_sslUpgrade httpd-manual | Oct 13, 2020 | Mar 21, 2018 |
| Redhat_linux | — | Upgrade httpd-debuginfoUpgrade httpd-manualUpgrade mod_sessionUpgrade mod_ldapUpgrade mod_sslUpgrade httpd-toolsUpgrade httpd-develUpgrade httpdUpgrade mod_proxy_html | Oct 1, 2020 | Mar 26, 2018 |
| Suse | — | Upgrade apache2-utilsUpgrade apache2Upgrade apache2-workerUpgrade apache2-example-pagesUpgrade apache2-docUpgrade apache2-preforkUpgrade apache2-devel | Apr 6, 2018 | Mar 23, 2018 |
| Ubuntu | — | Upgrade apache2-bin | Apr 25, 2018 | Mar 23, 2018 |
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