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.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-tor | Oct 1, 2024 | Jun 29, 2021 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Jun 29, 2021 | |
| Debian | debian-upgrade-tor | Jun 21, 2021 | Jun 21, 2021 | |
| Gentoo Linux | gentoo-linux-upgrade-net-vpn-tor | Jul 12, 2021 | Jun 29, 2021 | |
| Suse | — | suse-upgrade-tor | Jun 26, 2021 | Jun 26, 2021 |
| Ubuntu | ubuntu-pro-upgrade-tor | Mar 22, 2023 | Jun 29, 2021 |
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