CVE-2021-34548: High severity tor project tor vulnerability
Published Jun 29, 2021
·Updated
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAYEND or RELAYRESOLVED to bypass the intended access control for ending a stream.
Affected Software
4 affected components
torproject Tor<0.3.5.15
torproject Tor>=0.4.0.0<0.4.4.9
torproject Tor>=0.4.5.0<0.4.5.9
torproject Tor>=0.4.6.0<0.4.6.5
Event History
Jun 29, 2021
CVE Published
via MITRE·11:00 AM
Data Sourced
via MITRE·11:00 AM
Description
Frequently Asked Questions
1
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-34548.
2
What is the severity of CVE-2021-34548?
The severity of CVE-2021-34548 is high with a severity value of 7.5.
3
How does CVE-2021-34548 affect Tor?
CVE-2021-34548 affects Tor versions up to 0.4.6.5, allowing an attacker to bypass access control for ending a stream by forging RELAY_END or RELAY_RESOLVED messages.
4
How can I fix CVE-2021-34548?
To fix CVE-2021-34548, users should upgrade to Tor version 0.4.6.5 or later.
5
Where can I find more information about CVE-2021-34548?
More information about CVE-2021-34548 can be found at the following references: [1] [2] [3].