CVE-2015-8744 Denial of service in n/a
A privileged guest user can crash the QEMU process by sending small Layer-2 packets via the VMXNET3 NIC, causing a 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-2015-8744?
CVE-2015-8744 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 29 Dec 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
QEMU (aka Quick Emulator) built with a VMWARE VMXNET3 paravirtual NIC emulator support is vulnerable to crash issue. It occurs when a guest sends a Layer-2 packet smaller than 22 bytes. A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance resulting in DoS.
Weakness: CWE-20
Which versions are affected by CVE-2015-8744?
It affects 2 products.
Products include Debian Debian Linux, Qemu Qemu.
How do I fix CVE-2015-8744?
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-2015-8744 being exploited?
There is no known exploitation of CVE-2015-8744 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2015-8744, GHSA-5hxw-v9gx-rf25, UBUNTU-CVE-2015-8744.