pure-ftpd vulnerability

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

* Ubuntu 16.04 LTS

Summary

Pure-FTPd could be made to expose sensitive information if it
recieved specially crafted input.

Software Description

* pure-ftpd - Secure and efficient FTP server

Details

Antonio Norales discovered that Pure-FTPd incorrectly handled
directory aliases. An attacker could possibly use this issue to
access sensitive information. (CVE-2020-9274)

Update instructions

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

Ubuntu 16.04 LTS
pure-ftpd - 1.0.36-3.2+deb8u1build0.16.04.1
pure-ftpd-common - 1.0.36-3.2+deb8u1build0.16.04.1
pure-ftpd-ldap - 1.0.36-3.2+deb8u1build0.16.04.1
pure-ftpd-mysql - 1.0.36-3.2+deb8u1build0.16.04.1
pure-ftpd-postgresql - 1.0.36-3.2+deb8u1build0.16.04.1

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

In general, a standard system update will make all the necessary
changes.

References

* CVE-2020-9274

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