In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.
| 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 httpd-toolsUpgrade mod_ldapUpgrade httpd-debuginfoUpgrade httpdUpgrade mod_sessionUpgrade httpd-manualUpgrade httpd-develUpgrade mod_proxy_htmlUpgrade mod_ssl | Aug 2, 2019 | Mar 23, 2018 |
| Debian | — | Upgrade apache2 | Apr 4, 2018 | Mar 23, 2018 |
| Freebsd | — | Upgrade apache24Upgrade apache22 | Mar 25, 2018 | Mar 24, 2018 |
| Hpux | — | Update hpuxwsAPACHE to the latest version | Mar 28, 2022 | Mar 26, 2018 |
| Huawei Euleros 2_0_sp1 | — | Upgrade mod_sslUpgrade httpd-manualUpgrade httpdUpgrade httpd-develUpgrade httpd-tools | May 29, 2018 | Mar 26, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade httpd-toolsUpgrade mod_sslUpgrade httpdUpgrade httpd-manualUpgrade httpd-devel | May 29, 2018 | Mar 26, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade httpdUpgrade httpd-manualUpgrade httpd-toolsUpgrade mod_sslUpgrade httpd-devel | Jul 3, 2018 | 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-dbd to version 2.4.33-0.175.3.32.0.3.0 on Solaris 11.3Upgrade 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-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-manualUpgrade mod_ldapUpgrade httpdUpgrade mod_proxy_htmlUpgrade mod_sessionUpgrade mod_sslUpgrade httpd-develUpgrade httpd-tools | Jul 21, 2020 | Mar 21, 2018 |
| Redhat_linux | — | Upgrade mod_sessionUpgrade mod_proxy_htmlUpgrade mod_ldapNo solution existsUpgrade httpdUpgrade httpd-debuginfoUpgrade httpd-manualUpgrade mod_sslUpgrade httpd-develUpgrade httpd-tools | Jul 30, 2019 | Mar 26, 2018 |
| Suse | — | Upgrade apache2-workerUpgrade apache2Upgrade apache2-develUpgrade apache2-utilsUpgrade apache2-docUpgrade apache2-preforkUpgrade apache2-example-pages | Apr 6, 2018 | Mar 23, 2018 |
| Ubuntu | — | Upgrade apache2-binUpgrade apache2.2-bin | Apr 25, 2018 | Mar 23, 2018 |
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