Information disclosure in Tor - CVE-2023-23589
Published: January 17, 2023
Vulnerability identifier: #VU71194
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-23589
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a logical error within the process_socks4_request() function in src/core/proto/proto_socks.c, which leaks DNS queries in case the "SafeSocks=1". A remote attacker can gain unauthorized access to sensitive information.
Affected software
Tor
Debian Linux
Gentoo Linux
Fedora
tor (Debian package)
net-vpn/tor
tor
Debian Linux
Gentoo Linux
Fedora
tor (Debian package)
net-vpn/tor
tor
How to mitigate CVE-2023-23589
Install updates from vendor's website.
Tor - addressed in versions 0.4.5.16, 0.4.7.13
tor (Debian package) - update to 0.4.5.16-1
net-vpn/tor - update to 0.4.7.13
tor - addressed in versions 0.4.7.13-1.el7, 0.4.7.13-1.el8, 0.4.7.13-1.el9, 0.4.7.13-1.fc36, 0.4.7.13-1.fc37
tor (Debian package) - update to 0.4.5.16-1
net-vpn/tor - update to 0.4.7.13
tor - addressed in versions 0.4.7.13-1.el7, 0.4.7.13-1.el8, 0.4.7.13-1.el9, 0.4.7.13-1.fc36, 0.4.7.13-1.fc37