{"id":"USN-6885-6","aliases":[],"status":"published","title":"apache2 regression","description":"USN-6885-1 fixed vulnerabilities in Apache. The patch for\nCVE-2024-38474 was incomplete and caused a regression.\nThis update provides the fix for this issue.\n\nOriginal advisory details:\n\n Orange Tsai discovered that the Apache HTTP Server mod_rewrite\n module incorrectly handled certain substitutions. A remote attacker\n could possibly use this issue to execute scripts in directories\n not directly reachable by any URL, or cause a denial of service.\n Some environments may require using the new UnsafeAllow3F flag\n to handle unsafe substitutions. (CVE-2024-38474)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2025-08-13T14:57:23Z","modified":"2026-04-22T10:50:14Z","fixes":[{"ecosystem":"Ubuntu:22.04:LTS","package":"apache2","fixed_in":["2.4.52-1ubuntu4.16"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"apache2","fixed_in":["2.4.58-1ubuntu8.8"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"apache2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.52-1ubuntu4.16"}]}],"versions":["2.4.48-3.1ubuntu3","2.4.48-3.1ubuntu4","2.4.51-2ubuntu1","2.4.52-1ubuntu1","2.4.52-1ubuntu2","2.4.52-1ubuntu4","2.4.52-1ubuntu4.1","2.4.52-1ubuntu4.2","2.4.52-1ubuntu4.3","2.4.52-1ubuntu4.4","2.4.52-1ubuntu4.5","2.4.52-1ubuntu4.6","2.4.52-1ubuntu4.7","2.4.52-1ubuntu4.8","2.4.52-1ubuntu4.9","2.4.52-1ubuntu4.10","2.4.52-1ubuntu4.11","2.4.52-1ubuntu4.12","2.4.52-1ubuntu4.13","2.4.52-1ubuntu4.14","2.4.52-1ubuntu4.15"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"apache2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.58-1ubuntu8.8"}]}],"versions":["2.4.57-2ubuntu2","2.4.57-2ubuntu3","2.4.58-1ubuntu1","2.4.58-1ubuntu2","2.4.58-1ubuntu6","2.4.58-1ubuntu7","2.4.58-1ubuntu8","2.4.58-1ubuntu8.1","2.4.58-1ubuntu8.2","2.4.58-1ubuntu8.3","2.4.58-1ubuntu8.4","2.4.58-1ubuntu8.5","2.4.58-1ubuntu8.6","2.4.58-1ubuntu8.7"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-6885-6","tags":["advisory"]},{"url":"https://launchpad.net/bugs/2119395","tags":["report"]}],"sources":{"osv":[{"id":"USN-6885-6","title":"apache2 regression","description":"USN-6885-1 fixed vulnerabilities in Apache. The patch for\nCVE-2024-38474 was incomplete and caused a regression.\nThis update provides the fix for this issue.\n\nOriginal advisory details:\n\n Orange Tsai discovered that the Apache HTTP Server mod_rewrite\n module incorrectly handled certain substitutions. A remote attacker\n could possibly use this issue to execute scripts in directories\n not directly reachable by any URL, or cause a denial of service.\n Some environments may require using the new UnsafeAllow3F flag\n to handle unsafe substitutions. (CVE-2024-38474)\n \n","status":"published","published":"2025-08-13T14:57:23Z","modified":"2026-04-22T10:50:14.588235Z","updated_at":"2026-11-02T16:58:17.914523Z"}]}}