Detections
Analytics

CVE-2021-34549

high

Description

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.

References

https://security.gentoo.org/glsa/202107-25

https://gitlab.torproject.org/tpo/core/tor/-/issues/40391

https://blog.torproject.org/node/2041

Details

Source: Mitre, NVD

Published: 2021-06-29

Updated: 2022-07-12

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High