CVE-2015-5239 Integer overflow in QEMU

Medium 6.5 Published 23 Jan 2020 Updated 6 Aug 2024

An integer overflow in QEMU's VNC driver allows attackers to cause a denial of service via a crafted message, impacting virtualization infrastructure.

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

What is CVE-2015-5239?

CVE-2015-5239 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 23 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Integer overflow in the VNC display driver in QEMU before 2.1.0 allows attachers to cause a denial of service (process crash) via a CLIENT_CUT_TEXT message, which triggers an infinite loop.

Weakness: CWE-835

Which versions are affected by CVE-2015-5239?

It affects 8 products.

Products include Arista Eos, Canonical Ubuntu Linux, Fedoraproject Fedora, Qemu Qemu, Suse Linux Enterprise Debuginfo, Suse Linux Enterprise Desktop and 2 more.

How do I fix CVE-2015-5239?

Upgrade to a fixed version.

Is CVE-2015-5239 being exploited?

There is no known exploitation of CVE-2015-5239 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-5239, GHSA-9mm7-7f84-98c9, UBUNTU-CVE-2015-5239.