rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection by the client.
Weakness
The product does not validate, or incorrectly validates, a certificate.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | RedHat | rsync-0:3.5.0-3.el10_2 | * |
| Red Hat Enterprise Linux 9 | RedHat | rsync-0:3.2.7-1.el9_8 | * |
| Red Hat Enterprise Linux 9 | RedHat | rsync-0:3.2.7-1.el9_8 | * |