Mysql Server · Dbd::Mysql · CVE-2017-10789
**Name of the Vulnerable Software and Affected Versions**
DBD::mysql versions through 4.043
**Description**
The issue allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack. This occurs because the mysql ssl=1 setting is used to mean that SSL is optional, despite the documentation stating that communication with the server will be encrypted.
**Recommendations**
For DBD::mysql versions through 4.043, consider disabling the use of the mysql ssl=1 setting until a patch is available, and instead, enforce SSL encryption for all connections to prevent cleartext-downgrade attacks.