Improper validation of certificate with host mismatch in Rsync - CVE-2020-14387
Published: January 4, 2021 / Updated: May 1, 2023
Vulnerability identifier: #VU49239
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-14387
CWE-ID: CWE-297
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists in Samba rsync due to the application does not verify the hostname in the server certificate in openssl mode. A remote attacker can supply any valid certificate for another hostname and intercept the traffic.
Affected software
Rsync
Arch Linux
Gentoo Linux
PowerStore T
Dell EMC PowerStore Family Operating System
Arch Linux
Gentoo Linux
PowerStore T
Dell EMC PowerStore Family Operating System
How to mitigate CVE-2020-14387
Install update from vendor's website.
Rsync - update to 3.2.4
PowerStore T - update to 3.6.1.2-2315284
Dell EMC PowerStore Family Operating System - update to 4.0.0.0-2284811
PowerStore T - update to 3.6.1.2-2315284
Dell EMC PowerStore Family Operating System - update to 4.0.0.0-2284811