Vulnerability Monitor

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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.

Published

2021-08-30T05:15:07.237

Last Modified

2024-11-21T06:16:57.803

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-617

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	torproject	tor	< 0.3.5.16	Yes
Application	torproject	tor	< 0.4.5.10	Yes
Application	torproject	tor	< 0.4.6.7	Yes

References

https://blog.torproject.org Release Notes, Vendor Advisory ([email protected])
https://blog.torproject.org/node/2062 Release Notes, Vendor Advisory ([email protected])
https://bugs.torproject.org/tpo/core/tor/40078 Exploit, Issue Tracking, Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/202305-11 ([email protected])
https://blog.torproject.org Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://blog.torproject.org/node/2062 Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.torproject.org/tpo/core/tor/40078 Exploit, Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202305-11 (af854a3a-2127-422b-91ae-364da2661108)