VULNERABILITY INTELLIGENCE
CVE-2021-34549
CVSS score7.5 HIGH
EPSS probability1.61%
CISA KEVNot currently listed
Published2021-06-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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.
Weakness classification
- nvd@nist.gov: CWE-400
Primary references
- cve@mitre.org — Release Notes, Vendor Advisory
- cve@mitre.org — Broken Link
- cve@mitre.org — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory