{"id":"ALPINE-CVE-2021-34549","details":"An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency.","modified":"2026-11-03T06:32:58.485388485Z","published":"2021-06-29T12:15:08.643Z","upstream":["CVE-2021-34549"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-34549"}],"affected":[{"package":{"name":"tor","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/tor?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.4.0.0"},{"fixed":"0.4.4.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-34549.json"}},{"package":{"name":"tor","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/tor?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.4.0.0"},{"fixed":"0.4.4.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-34549.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}