CVE-2021-34549
Published: 29 June 2021
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
tor Launchpad, Ubuntu, Debian |
bionic |
Released
(0.3.2.10-1ubuntu0.2~esm2)
Available with Ubuntu Pro |
| focal |
Released
(0.4.2.7-1ubuntu0.1~esm1)
Available with Ubuntu Pro |
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(0.4.6.10-1)
|
|
| kinetic |
Not vulnerable
(0.4.7.10-1)
|
|
| lunar |
Not vulnerable
(0.4.7.10-1)
|
|
| mantic |
Not vulnerable
(0.4.7.10-1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(0.4.6.5)
|
|
| xenial |
Released
(0.2.9.14-1ubuntu1~16.04.3+esm1)
Available with Ubuntu Pro |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| 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 |