CVE-2020-7456 Memory corruption in FreeBSD
An attacker with physical access can execute arbitrary code via a crafted USB device due to improper memory handling in the HID subsystem.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-7456?
CVE-2020-7456 is a medium-severity memory corruption vulnerability in Freebsd Freebsd, published on 9 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In FreeBSD 12.1-STABLE before r361918, 12.1-RELEASE before p6, 11.4-STABLE before r361919, 11.3-RELEASE before p10, and 11.4-RC2 before p1, an invalid memory location may be used for HID items if the push/pop level is not restored within the processing of that HID item allowing an attacker with physical access to a USB port to be able to use a specially crafted USB device to gain kernel or user-space code execution.
Weakness: CWE-119
Which versions are affected by CVE-2020-7456?
It affects 2 products.
Products include Freebsd Freebsd, Netapp Clustered Data Ontap.
How do I fix CVE-2020-7456?
No fix has been published for CVE-2020-7456 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-7456 being exploited?
There is no known exploitation of CVE-2020-7456 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-g86x-jhxw-c6c2.