Vulnerability Description
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Torproject | Tor | < 0.3.5.15 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-CoThird Party AdvisoryVDB Entry
- https://blog.torproject.org/node/2041Release NotesVendor Advisory
- https://gitlab.torproject.org/tpo/core/tor/-/issues/40389Broken Link
- https://security.gentoo.org/glsa/202107-25Third Party Advisory
- http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-CoThird Party AdvisoryVDB Entry
- https://blog.torproject.org/node/2041Release NotesVendor Advisory
- https://gitlab.torproject.org/tpo/core/tor/-/issues/40389Broken Link
- https://security.gentoo.org/glsa/202107-25Third Party Advisory
FAQ
What is CVE-2021-34548?
CVE-2021-34548 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream.
How severe is CVE-2021-34548?
CVE-2021-34548 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-34548?
Check the references section above for vendor advisories and patch information. Affected products include: Torproject Tor.