VulnerabilityModified
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.
HIGH 7.5EPSS 1.69%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.69% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-617
- Affected
- torproject/tor
- Source
- cve@mitre.org
References
- https://blog.torproject.orgRelease Notes, Vendor Advisory
- https://blog.torproject.org/node/2062Release Notes, Vendor Advisory
- https://bugs.torproject.org/tpo/core/tor/40078Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202305-11
- https://blog.torproject.orgRelease Notes, Vendor Advisory
- https://blog.torproject.org/node/2062Release Notes, Vendor Advisory
- https://bugs.torproject.org/tpo/core/tor/40078Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202305-11
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.