{"id":"UBUNTU-CVE-2018-0490","details":"An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.","modified":"2025-09-08T16:44:37Z","published":"2018-03-05T15:29:00Z","upstream":["CVE-2018-0490"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-0490"},{"type":"REPORT","url":"https://trac.torproject.org/projects/tor/ticket/25074"},{"type":"REPORT","url":"https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-0490"}],"affected":[{"package":{"name":"tor","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/tor@0.2.9.14-1ubuntu1~16.04.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.9.14-1ubuntu1~16.04.3"}]}],"versions":["0.2.6.10-1ubuntu2","0.2.7.6-1ubuntu1","0.2.9.11-1ubuntu1~16.04.1","0.2.9.14-1ubuntu1~16.04.1","0.2.9.14-1ubuntu1~16.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"0.2.9.14-1ubuntu1~16.04.3","binary_name":"tor"},{"binary_version":"0.2.9.14-1ubuntu1~16.04.3","binary_name":"tor-geoipdb"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-0490.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}