libproxy vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

* Ubuntu 20.04 LTS
* Ubuntu 18.04 LTS
* Ubuntu 16.04 LTS

Summary

libproxy could be made to crash if it received a specially crafted
PAC file.

Software Description

* libproxy - automatic proxy configuration management library

Details

It was discovered that libproxy incorrectly handled certain PAC
files. An attacker could possibly use this issue to cause a denial
of service.

Update instructions

The problem can be corrected by updating your system to the
following package versions:

Ubuntu 20.04 LTS
libproxy1v5 - 0.4.15-10ubuntu1.1

Ubuntu 18.04 LTS
libproxy1v5 - 0.4.15-1ubuntu0.1

Ubuntu 16.04 LTS
libproxy1v5 - 0.4.11-5ubuntu1.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart your session to
make all the necessary changes.

References

* CVE-2020-25219

--- Mystic BBS v1.12 A45 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)