CVE-2017-7980 Memory corruption in n/a
Local guest users can execute arbitrary code or crash the system via a heap buffer overflow in the QEMU Cirrus VGA emulator.
- 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-2017-7980?
CVE-2017-7980 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 25 Jul 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Heap-based buffer overflow in Cirrus CLGD 54xx VGA Emulator in Quick Emulator (Qemu) 2.8 and earlier allows local guest OS users to execute arbitrary code or cause a denial of service (crash) via vectors related to a VNC client updating its display after a VGA operation.
Weakness: CWE-119
Which versions are affected by CVE-2017-7980?
It affects 11 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Qemu Qemu, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 5 more.
How do I fix CVE-2017-7980?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-7980 being exploited?
There is no known exploitation of CVE-2017-7980 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2017-7980, GHSA-w847-jx6c-6j35, UBUNTU-CVE-2017-7980.