{"id":"RLSA-2021:4257","summary":"Moderate: httpd:2.4 security, bug fix, and enhancement update","details":"The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.\n\nSecurity Fix(es):\n\n* httpd: mod_session: NULL pointer dereference when parsing Cookie header (CVE-2021-26690)\n\n* httpd: Unexpected URL matching with 'MergeSlashes OFF' (CVE-2021-30641)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.","modified":"2026-03-11T06:00:42.975867Z","published":"2021-11-09T08:52:38Z","upstream":["CVE-2021-26690","CVE-2021-30641"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:4257"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1905613"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1934741"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1935742"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1937334"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1952557"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1966729"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1966743"}],"affected":[{"package":{"name":"httpd","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/httpd?distro=rocky-linux-8-5-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.37-41.module+el8.5.0+695+1fa8055e"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4257.json"}},{"package":{"name":"mod_http2","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_http2?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.15.7-3.module+el8.4.0+553+7a69454b"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4257.json"}},{"package":{"name":"mod_http2","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_http2?distro=rocky-linux-8-5-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.15.7-3.module+el8.5.0+695+1fa8055e"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4257.json"}},{"package":{"name":"mod_md","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_md?distro=rocky-linux-8&epoch=1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-8.module+el8.5.0+695+1fa8055e"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4257.json"}},{"package":{"name":"mod_md","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_md?distro=rocky-linux-8-4-legacy&epoch=1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-8.module+el8.4.0+553+7a69454b"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4257.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}