The interactive installer used in EnterpriseDB-supplied PostgreSQL packages failed to secure its connection to the download server. Hence, an attacker able to impersonate the download server within a PostgreSQL installation's network scope can execute arbitrary code, as root, during initial installation or when the user directs the installed StackBuilder to acquire additional software. PostgreSQL binaries delivered other ways, such as installations from Yum or Apt packages, are unaffected.
Acknowledgments: Name: the PostgreSQL project