By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade apache2 | Aug 21, 2018 | Jul 18, 2018 |
| Amazon Linux Ami 2 | — | Upgrade httpd-develUpgrade httpd-manualUpgrade httpd-debuginfoUpgrade mod_proxy_htmlUpgrade mod_sessionUpgrade mod_sslUpgrade mod_mdUpgrade httpd-filesystemUpgrade httpd-toolsUpgrade httpdUpgrade mod_ldap | Apr 27, 2020 | Jul 18, 2018 |
| Amazon_linux | — | Upgrade httpd24 | Aug 24, 2018 | Jul 18, 2018 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Jul 19, 2018 | Jul 18, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jul 18, 2018 |
| Debian | — | Upgrade apache2 | Jul 30, 2024 | Jul 18, 2018 |
| Freebsd | — | Upgrade apache24 | Jul 19, 2018 | Jul 18, 2018 |
| Ibm Http_server | — | Apply IBM HTTP Server version 9.0.0.9 or later | Sep 28, 2018 | Jul 18, 2018 |
| Oracle Solaris | — | Upgrade library/perl-5/xml-sax-base-526 to version 1.8-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/dbd-sqlite to version 1.58-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/database-526 to version 1.636-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-namespacesupport-522 to version 1.11-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/server/apache-24/module/apache-lua to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade mail/mailman to version 2.1.29.1-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/sqlite-3/documentation to version 3.24.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/net-ssleay-522 to version 1.80-11.4.1.0.1.1.0 on Solaris 11.4Upgrade diagnostic/wireshark/tshark to version 2.6.3-11.4.1.0.1.2.0 on Solaris 11.4Upgrade library/perl-5/dbd-sqlite-522 to version 1.58-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/desktop/webkitgtk4 to version 2.18.6-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/pmtools-522 to version 2.0.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/dbd-mysql-522 to version 4042-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/python/pyatspi2-27 to version 2.18.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/speech/espeak to version 1.44.0.5-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-parser-522 to version 2.44-11.4.1.0.1.1.0 on Solaris 11.4Upgrade diagnostic/wireshark/wireshark-common to version 2.6.3-11.4.1.0.1.2.0 on Solaris 11.4Upgrade web/server/apache-24/module/apache-ssl to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/authen-pam-522 to version 0.16-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/authen-pam-526 to version 0.16-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/python/pyatspi2-35 to version 2.18.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/authen-pam to version 5.8.4-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/perl-x11-protocol to version 0.56-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/server/apache-24/module/apache-dbd to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/desktop/dotconf to version 1.3-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/server/apache-24/module/apache-gss to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-simple to version 2.24-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-parser to version 5.12.1-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/dbd-mysql to version 4042-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/mysql-57/library to version 5.7.23-11.4.1.0.1.1.0 on Solaris 11.4Upgrade terminal/cssh-522 to version 4.9-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/desktop/speech-dispatcher to version 0.8.6-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-namespacesupport to version 1.11-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/pmtools to version 2.0.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/CGI to version 4.37-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/dbd-sqlite-526 to version 1.58-11.4.1.0.1.1.0 on Solaris 11.4Upgrade diagnostic/wireshark to version 2.6.3-11.4.1.0.1.2.0 on Solaris 11.4Upgrade library/perl-5/perl-x11-protocol-526 to version 0.56-11.4.1.0.1.1.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.9.1-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-libxml-522 to version 2.128-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/database-522 to version 1.636-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/server/apache-24/module/apache-ldap to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/python/pyatspi2 to version 2.18.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade mail/thunderbird to version 52.9.1-11.4.1.0.1.1.0 on Solaris 11.4Upgrade terminal/cssh to version 4.9-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-libxml-526 to version 2.128-11.4.1.0.1.1.0 on Solaris 11.4Upgrade runtime/tcl-8/tcl-sqlite-3 to version 3.24.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade system/display-manager/gdm to version 3.24.2-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-parser-526 to version 2.44-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/server/apache-24/module/apache-ssl-fips-140 to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-libxml to version 2.128-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-namespacesupport-526 to version 1.11-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/CGI-522 to version 4.37-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-sax-base to version 1.8-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/python/pyatspi2-34 to version 2.18.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade system/display-manager/desktop-startup to version 0.38.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/perl-x11-protocol-522 to version 0.56-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/mysql-57 to version 5.7.23-11.4.1.0.1.1.0 on Solaris 11.4Upgrade terminal/cssh-526 to version 4.9-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-sax-526 to version 0.99-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/database to version 1.636-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/gettext-522 to version 1.0.7-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/perl-tk-522 to version 804.33-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/gettext-526 to version 1.0.7-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/mysql-57/client to version 5.7.23-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/mysql-57/tests to version 5.7.23-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/server/apache-24 to version 2.4.34-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/dbd-mysql-526 to version 4042-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/gettext to version 1.0.7-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-simple-522 to version 2.24-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-sax to version 0.99-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/CGI-526 to version 4.37-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/sqlite-3 to version 3.24.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/net-ssleay-526 to version 1.80-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/java-servlet/tomcat-8 to version 8.5.32-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-sax-base-522 to version 1.8-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-sax-522 to version 0.99-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/perl-tk-526 to version 804.33-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/curl to version 7.61.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/xml-simple-526 to version 2.24-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/perl-tk to version 804.33-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/java-servlet/tomcat-8/tomcat-examples to version 8.5.32-11.4.1.0.1.1.0 on Solaris 11.4Upgrade web/java-servlet/tomcat-8/tomcat-admin to version 8.5.32-11.4.1.0.1.1.0 on Solaris 11.4Upgrade image/library/libjpeg to version 6.0.2-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/liblouis to version 3.5.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/net-ssleay to version 1.80-11.4.1.0.1.1.0 on Solaris 11.4Upgrade library/perl-5/pmtools-526 to version 2.0.0-11.4.1.0.1.1.0 on Solaris 11.4Upgrade database/mysql-57/embedded to version 5.7.23-11.4.1.0.1.1.0 on Solaris 11.4 | Oct 19, 2018 | Jul 18, 2018 |
| Suse | — | Upgrade apache2-eventUpgrade apache2-workerUpgrade apache2-utilsUpgrade apache2-example-pagesUpgrade apache2-develUpgrade apache2-preforkUpgrade apache2-docUpgrade apache2 | Aug 20, 2018 | Jul 18, 2018 |
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