Debian Security Advisory 1309-1 – It was discovered that the PostgreSQL database performs insufficient validation of variables passed to privileged SQL statements, so called “security definers”, which could lead to SQL privilege escalation.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/57210/dsa-1309-1.txt
Source: https://packetstormsecurity.com/files/57210/Debian-Linux-Security-Advisory-1309-1.html