CVE-2019-20382 Denial of service in n/a
A memory leak in QEMU's VNC implementation allows attackers to cause a denial of service by exhausting system memory during disconnect operations.
- 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-2019-20382?
CVE-2019-20382 is a low-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 5 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.
Weakness: CWE-401
Which versions are affected by CVE-2019-20382?
It affects 4 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Qemu Qemu.
How do I fix CVE-2019-20382?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-20382 being exploited?
There is no known exploitation of CVE-2019-20382 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-20382, GHSA-gg7h-8w45-pgpg, UBUNTU-CVE-2019-20382.