Resource management error in Tor - CVE-2022-33903
Published: May 4, 2023
Vulnerability identifier: #VU75732
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-33903
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources when processing wedging of RTT estimation. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
Tor
Gentoo Linux
Fedora
tor
net-vpn/tor
Gentoo Linux
Fedora
tor
net-vpn/tor
How to mitigate CVE-2022-33903
Install updates from vendor's website.
Tor - update to 0.4.7.8
tor - update to 0.4.7.8-1.fc36
net-vpn/tor - update to 0.4.7.13
tor - update to 0.4.7.8-1.fc36
net-vpn/tor - update to 0.4.7.13