{"id":"CVE-2023-27539","published":"2025-01-09T00:33:47Z","modified":"2025-01-09T21:24:51Z","title":"There is a denial of service vulnerability in the header parsing component of Rack","vendor":"Rails","product":"Rack","tier":"tail","description":{"text":"There is a denial of service vulnerability in the header parsing component of Rack.","provenance":"source","from":"CVE.org"},"cvss":{"score":5.3,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.01058,"percentile":0.64505,"provenance":"source"},"cwes":[],"references":[{"url":"https://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466","tags":[]},{"url":"https://github.com/advisories/GHSA-c6qg-cjj8-47qp","tags":[]},{"url":"https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c","tags":[]},{"url":"https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff","tags":[]},{"url":"https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html","tags":[]},{"url":"https://security.netapp.com/advisory/ntap-20231208-0016/","tags":[]},{"url":"https://www.debian.org/security/2023/dsa-5530","tags":[]}],"priority":{"score":16.6,"factors":[{"name":"EPSS percentile","points":12.9},{"name":"CVSS severity","points":3.71}]},"vendorSlug":"rails","affectedVersions":[{"vendor":"Rails","product":"Rack","versions":[">= 2.2.6.4, < 2.2.6.4",">= 3.0.6.1, < 3.0.6.1"]}],"affected":[{"ecosystem":"RubyGems","package":"rack","vulnerableRanges":[">=2.0.0, <2.2.6.4",">=3.0.0, <3.0.6.1"],"patched":["2.2.6.4","3.0.6.1"],"from":["GHSA-c6qg-cjj8-47qp"],"provenance":"source"}],"euvd":{"id":"EUVD-2023-0979","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-rack-cve-2020-8184","parents":[{"from":"CVE-2024-39316","to":"CVE-2023-27539","relation":"related","confidence":"medium","kind":"lineage","evidence":[{"kind":"same-code","provenance":"machine","files":["lib/rack/request.rb"],"commits":["https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c","https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff","https://github.com/rack/rack/commit/412c980450ca729ee37f90a2661f166a9665e058"],"basis":"shared function","functions":["wrap_ipv6"]}]}],"children":[{"from":"CVE-2023-27539","to":"CVE-2025-61919","relation":"related","confidence":"medium","kind":"lineage","evidence":[{"kind":"same-code","provenance":"machine","files":["lib/rack/request.rb"],"commits":["https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c","https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff","https://github.com/rack/rack/commit/4e2c903991a790ee211a3021808ff4fd6fe82881","https://github.com/rack/rack/commit/cbd541e8a3d0c5830a3c9a30d3718ce2e124f9db"],"basis":"rarely changed file"}]}],"packageHistory":[{"cve":"CVE-2022-44571","published":"2023-02-09","fixed":"3.0.4.1","kev":false},{"cve":"CVE-2022-44572","published":"2023-02-09","fixed":"3.0.4.1","kev":false},{"cve":"CVE-2023-27530","published":"2023-03-10","fixed":"3.0.4.2","kev":false,"link":{"from":"CVE-2023-27530","to":"CVE-2023-27539","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"RubyGems:rack","fromFixed":"2.2.6.3","toFixed":"2.2.6.4","daysApart":671},{"kind":"version-step","provenance":"source","package":"RubyGems:rack","fromFixed":"3.0.4.2","toFixed":"3.0.6.1","daysApart":671}]}},{"cve":"CVE-2023-27539","published":"2025-01-09","fixed":"3.0.6.1","kev":false},{"cve":"CVE-2024-25126","published":"2024-02-28","fixed":"3.0.9.1","kev":false},{"cve":"CVE-2024-26141","published":"2024-02-28","fixed":"3.0.9.1","kev":false},{"cve":"CVE-2024-26146","published":"2024-02-28","fixed":"3.0.9.1","kev":false}],"package":"RubyGems:rack"}}