CVE-2022-33903
Publication date 17 July 2022
Last updated 25 August 2025
Ubuntu priority
Description
Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| tor | 22.04 LTS jammy |
Not affected
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Other references
- https://bugzilla.redhat.com/show_bug.cgi?id=2099227
- https://gitlab.torproject.org/tpo/core/tor/-/issues/40626
- https://lists.torproject.org/pipermail/tor-announce/2022-June/000242.html
- https://github.com/torproject/tor/commit/b0496d40197dd5b4fb7b694c1410082d4e34dda6 (tor-0.4.7.8)
- https://www.cve.org/CVERecord?id=CVE-2022-33903