PT-2021-2516 · Tor+4 · Tor+4
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Tor versions prior to 0.4.5.7
Description
The issue allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target. This is related to an error in the resource consumption control mechanism of the Tor browser's dump desc() function. Exploitation of this issue can lead to a denial of service.
Recommendations
For versions prior to 0.4.5.7, update to version 0.4.5.7 or later to resolve the issue. As a temporary workaround, consider restricting access to the Tor directory protocol to minimize the risk of exploitation.
Fix
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Linuxmint
Suse
Tor
Ubuntu