CVE-2019-7240 Privilege escalation in n/a
A vulnerability in the WinRing0x64.sys driver allows arbitrary MSR writes via IOCTL, enabling Ring-0 code execution and privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-7240?
CVE-2019-7240 is a high-severity vulnerability in n/a, published on 25 Mar 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An issue was discovered in WinRing0x64.sys in Moo0 System Monitor 1.83. The vulnerable driver exposes a wrmsr instruction via IOCTL 0x9C402088 and does not properly filter the Model Specific Register (MSR). Allowing arbitrary MSR writes can lead to Ring-0 code execution and escalation of privileges.
Weakness: CWE-665
Which versions are affected by CVE-2019-7240?
It affects 1 product.
Products include Moo0 System Monitor.
How do I fix CVE-2019-7240?
No fix has been published for CVE-2019-7240 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-7240 being exploited?
There is no known exploitation of CVE-2019-7240 in the wild and no public exploit code.
Sources
Also known as GHSA-qr76-rqwf-r4c5.