CVE-2017-11747 Privilege escalation in n/a

Medium 5.5 Published 30 Jul 2017 Updated 5 Aug 2024

Local attackers can kill arbitrary processes by modifying the PID file before a root script executes, leading to privilege escalation or denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2017-11747?

CVE-2017-11747 is a medium-severity vulnerability in n/a, published on 30 Jul 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.

Weakness: CWE-269

Which versions are affected by CVE-2017-11747?

It affects 1 product.

Linux distribution packages (1)

tinyproxy openSUSE:Tumbleweed All versions 1.11.0-1.3

Products include Tinyproxy Project Tinyproxy.

How do I fix CVE-2017-11747?

Apply the vendor's patch.

Is CVE-2017-11747 being exploited?

There is no known exploitation of CVE-2017-11747 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2017-11747, DLA-2163-1, GHSA-r3gc-6285-7fj7, UBUNTU-CVE-2017-11747, USN-4808-1, openSUSE-SU-2024:11465-1.