Debian 8 Jessie: DLA-2163-1 Moderate: Tinyproxy Security Fix

debian lts

March 31, 2020

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

Topics Covered

security advisory debian tinyproxy daemon minor issue http proxy packaging bug

Summary

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