CVE-2021-34549
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-34549
Vendor advisory: arch — https://security.archlinux.org/ASA-202106-50
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 0.4.5.9-1 | |
| debian | bookworm | fixed | 0.4.5.9-1 |
| debian | bullseye | fixed | 0.4.5.9-1 |
| debian | forky | fixed | 0.4.5.9-1 |
| debian | sid | fixed | 0.4.5.9-1 |
| debian | trixie | fixed | 0.4.5.9-1 |
References
Verify integrity in audit chain (admin only). AS-IS.