[SECURITY] [DLA 2163-1] tinyproxy security update

Package : tinyproxy
Version : 1.8.3-3+deb8u1
CVE ID : CVE-2017-11747
Debian Bug : 870307 948283

A minor security issue and a severe packaging bug have been fixed in
tinyproxy, a lightweight http proxy daemon.

CVE-2017-11747

main.c in Tinyproxy created a /var/run/tinyproxy/tinyproxy.pid file
after dropping privileges to a non-root account, which might have
allowed local users to kill arbitrary processes by leveraging access
to this non-root account for tinyproxy.pid modification before a root
script executed a "kill cat /run/tinyproxy/tinyproxy.pid" command.

OTHER

Furthermore, a severe flaw had been discovered by Tim Duesterhus in
Debian's init script for tinyproxy. With the tiny.conf configuration
file having the PidFile option removed, the next run of logrotate (if
installed) would have changed the owner of the system's base directory
("/") to tinyproxy:tinyproxy.

For Debian 8 "Jessie", this problem has been fixed in version
1.8.3-3+deb8u1. These fixes were prepared by Mike Gabriel.

We recommend that you upgrade your tinyproxy packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

Best,
Utkarsh