{"id":"UBUNTU-CVE-2023-43669","details":"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).","modified":"2026-05-20T16:13:51.039199429Z","published":"2023-09-21T06:15:00Z","upstream":["CVE-2023-43669"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-43669"},{"type":"REPORT","url":"https://github.com/snapview/tungstenite-rs/issues/376"},{"type":"REPORT","url":"https://github.com/snapview/tungstenite-rs/commit/f916b332a97f78f4d54d942b9e008a1af57ff938"},{"type":"REPORT","url":"https://github.com/snapview/tungstenite-rs/commit/2e5029284b8bef3e59df0c9d3920c0ed6c7da7a9"},{"type":"REPORT","url":"https://github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2"},{"type":"REPORT","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAK/"},{"type":"REPORT","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGM/"},{"type":"REPORT","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7D/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2240110"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1215563"},{"type":"REPORT","url":"https://crates.io/crates/tungstenite/versions"},{"type":"REPORT","url":"https://cwe.mitre.org/data/definitions/407.html"},{"type":"REPORT","url":"https://github.com/advisories/GHSA-9mcr-873m-xcxp"},{"type":"REPORT","url":"https://github.com/github/advisory-database/pull/2752"},{"type":"REPORT","url":"https://security-tracker.debian.org/tracker/CVE-2023-43669"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-43669"}],"affected":[{"package":{"name":"rust-tungstenite","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rust-tungstenite?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.20.1-1","0.20.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"librust-tungstenite-dev","binary_version":"0.20.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-43669.json"}},{"package":{"name":"rust-tungstenite","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/rust-tungstenite?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.24.0-3","0.24.0-4"],"ecosystem_specific":{"binaries":[{"binary_version":"0.24.0-4","binary_name":"librust-tungstenite-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-43669.json"}},{"package":{"name":"rust-tungstenite","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rust-tungstenite?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.24.0-4","0.24.0-5","0.28.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.28.0-1","binary_name":"librust-tungstenite-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-43669.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"},{"type":"Ubuntu","score":"medium"}]}