EDB PgBouncer release notes v1

Released: 11 Dec 2021

EDB PgBouncer includes the following upstream merge and security fix:

Upstream mergeMerged with community PgBouncer See the community Release Notes for details.
Security fixMake PgBouncer acting as a server reject extraneous data after an SSL or GSS encryption handshake.

A man-in-the-middle with the ability to inject data into the TCP connection could stuff some cleartext data into the start of a supposedly encryption-protected database session. This could be abused to send faked SQL commands to the server, although that would only work if PgBouncer did not demand any authentication data. However, a PgBouncer setup relying on SSL certificate authentication might well not do so.