CVE-2019-17069 Use after free in n/a

High 7.5 Published 1 Oct 2019 Updated 5 Aug 2024

A remote SSH-1 server can cause a denial of service in PuTTY by triggering a use-after-free error via a disconnect message.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-17069?

CVE-2019-17069 is a high-severity use after free vulnerability in Opensuse Leap, published on 1 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PuTTY before 0.73 might allow remote SSH-1 servers to cause a denial of service by accessing freed memory locations via an SSH1_MSG_DISCONNECT message.

Weakness: CWE-416

Which versions are affected by CVE-2019-17069?

It affects 3 products.

Products include Netapp Oncommand Unified Manager Core Package, Opensuse Leap, Putty Putty.

How do I fix CVE-2019-17069?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2019-17069 being exploited?

There is no known exploitation of CVE-2019-17069 in the wild and no public exploit code.

All Opensuse Leap vulnerabilities

Sources

Also known as ALPINE-CVE-2019-17069, DEBIAN-CVE-2019-17069, GHSA-9fg2-hvwm-63r7, UBUNTU-CVE-2019-17069.