{"id":"CVE-2023-43669","state":"PUBLISHED","title":"The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client","description":"The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client handshake. The length affects both how many times a parse is attempted (e.g., thousands of times) and the average amount of data for each parse attempt (e.g., millions of bytes).","publishedAt":"2023-09-21T00:00:00.000Z","updatedAt":"2024-08-02T19:44:43.829Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://github.com/snapview/tungstenite-rs/issues/376","https://cwe.mitre.org/data/definitions/407.html","https://crates.io/crates/tungstenite/versions","https://github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2","https://github.com/advisories/GHSA-9mcr-873m-xcxp","https://github.com/github/advisory-database/pull/2752","https://bugzilla.suse.com/show_bug.cgi?id=1215563","https://bugzilla.redhat.com/show_bug.cgi?id=2240110","https://security-tracker.debian.org/tracker/CVE-2023-43669","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAK/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7D/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGM/"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:17.512Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/43xxx/CVE-2023-43669.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-43669","state":"PUBLISHED","datePublished":"2023-09-21T00:00:00.000Z","dateUpdated":"2024-08-02T19:44:43.829Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2023-09-21T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client handshake. 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