{"id":"UBUNTU-CVE-2021-34548","details":"An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream.","modified":"2026-01-30T00:59:37.360607Z","published":"2021-06-29T11:15:00Z","related":["USN-5036-1"],"upstream":["CVE-2021-34548"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-34548"},{"type":"REPORT","url":"https://blog.torproject.org/node/2041"},{"type":"REPORT","url":"https://bugs.torproject.org/tpo/core/tor/40389"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5036-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-34548"}],"affected":[{"package":{"name":"tor","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/tor@0.4.2.7-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.2.7-1ubuntu0.1~esm1"}]}],"versions":["0.4.1.5-1","0.4.1.5-1build1","0.4.1.6-1","0.4.2.5-1","0.4.2.6-1","0.4.2.7-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"0.4.2.7-1ubuntu0.1~esm1","binary_name":"tor"},{"binary_version":"0.4.2.7-1ubuntu0.1~esm1","binary_name":"tor-geoipdb"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-34548.json"}}],"schema_version":"1.7.3","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"}]}