VDB
CVE-2021-34549
CVE-2021-34549
PUBLISHED
CVSS 7.5 HIGH
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.
EPSS 1.61% · 75.0th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
1.61%
75.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:18.04:LTS | tor | 0.3.2.10-1ubuntu0.1, 0.3.2.10-1, 0.3.2.9-1build1 |
| Ubuntu:Pro:20.04:LTS | tor | 0, 0.4.1.5-1, 0.4.1.5-1build1 |
| Ubuntu:Pro:16.04:LTS | tor | 0.2.6.10-1ubuntu2, *, 0.2.9.14-1ubuntu1~16.04.3 |
Timeline
- Jun 25, 2021 CVE Published
- Jun 30, 2021 EPSS Score
- Aug 30, 2021 EPSS Score
- Oct 29, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 27, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jun 29, 2022 EPSS Score
- Aug 29, 2022 EPSS Score
- Oct 29, 2022 EPSS Score
- Dec 28, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-34549 third-party-advisory
- https://blog.torproject.org/node/2041 third-party-advisory
- https://gitlab.torproject.org/tpo/core/tor/-/commit/4c06c619faceb5d158a725d97fda45cadb2cf9c9 third-party-advisory
- https://ubuntu.com/security/notices/USN-5036-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-34549 third-party-advisory