Updated python3 packages fix security vulnerabilities:
A flaw was found in the way catastrophic backtracking was implemented in Python's pop3lib's apop() method. An attacker could use this flaw to cause denial of service (CVE-2018-1060).
A flaw was found in the way catastrophic backtracking was implemented in Python's difflib.ISLINEJUNK method. An attacker could use this flaw to cause denial of service (CVE-2018-1061).
Possible denial of service vulnerability due to a missing check in Lib/wave.py to verify that at least one channel is provided (CVE-2017-18207).