{"id":"CVE-2017-8823","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-8823","generatedAt":"2026-10-29T01:42:27.026Z","title":"In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in…","description":"In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.","published":"2017-12-03T07:29:00.000Z","lastModified":"2026-06-17T01:27:02.000Z","status":"Modified","sourceIdentifier":"security@debian.org","cvss":{"version":"3.0","score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["tor project/tor","debian/debian linux"],"epss":{"score":0.01602,"percentile":0.75685,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516","tags":["Vendor Advisory"],"source":"security@debian.org"},{"url":"https://bugs.torproject.org/24313","tags":["Issue Tracking","Vendor Advisory"],"source":"security@debian.org"},{"url":"https://bugs.torproject.org/24430","tags":["Vendor Advisory"],"source":"security@debian.org"},{"url":"https://www.debian.org/security/2017/dsa-4054","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.torproject.org/24313","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.torproject.org/24430","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2017/dsa-4054","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-8823","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}