Vulnerability in Torproject Tor
CVE-2021-38385
Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and single-signature verification, leading to a remote assertion failure, aka TROVE-2021-007.
EPSS: 0.017 (74.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Torproject Tor
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)
- cve@mitre.org (vendor-advisory)
Frequently asked questions
- What is CVE-2021-38385?
- CVE-2021-38385 is a high-severity vulnerability in Torproject Tor, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-08-30.
- How severe is CVE-2021-38385?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-38385 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.