An issue was discovered in modaliasphysicalhandler in modalias.c in lighttpd before 1.4.50. There is potential ../ path traversal of a single directory above an alias target, with a specific mod_alias configuration where the matched alias lacks a trailing '/' character, but the alias target filesystem path does have a trailing '/' character.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-dbgsym" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-dev" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-doc" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-cml" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-cml-dbgsym" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-magnet" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-magnet-dbgsym" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-mysql-vhost" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-mysql-vhost-dbgsym" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-trigger-b4-dl" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-trigger-b4-dl-dbgsym" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-webdav" }, { "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1", "binary_name": "lighttpd-mod-webdav-dbgsym" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-dbgsym" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-dev" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-doc" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-cml" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-cml-dbgsym" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-magnet" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-magnet-dbgsym" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-mysql-vhost" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-mysql-vhost-dbgsym" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-trigger-b4-dl" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-trigger-b4-dl-dbgsym" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-webdav" }, { "binary_version": "1.4.35-4ubuntu2.1+esm1", "binary_name": "lighttpd-mod-webdav-dbgsym" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-dev" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-doc" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-authn-gssapi" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-authn-gssapi-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-authn-ldap" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-authn-ldap-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-authn-mysql" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-authn-mysql-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-cml" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-cml-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-geoip" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-geoip-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-magnet" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-magnet-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-mysql-vhost" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-mysql-vhost-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-trigger-b4-dl" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-trigger-b4-dl-dbgsym" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-webdav" }, { "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1", "binary_name": "lighttpd-mod-webdav-dbgsym" } ] }