CVE-2021-42972 Memory corruption in n/a
Local attackers can execute arbitrary code in kernel mode or cause a denial of service via a buffer overflow in the NoMachine Server IOCTL handler.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42972?
CVE-2021-42972 is a high-severity memory corruption vulnerability in n/a, published on 7 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NoMachine Server is affected by Buffer Overflow. IOCTL Handler 0x22001B in the NoMachine Server above 4.0.346 and below 7.7.4 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.
Weakness: CWE-120
Which versions are affected by CVE-2021-42972?
It affects 1 product.
Products include Nomachine Server.
How do I fix CVE-2021-42972?
No fix has been published for CVE-2021-42972 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-2021-42972 being exploited?
There is no known exploitation of CVE-2021-42972 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-hj35-99wc-7f3m.