CVE-2020-7261 Buffer overwrite in ENS allowed to bypass AMSI protection
Local attackers can exploit a buffer overflow in McAfee ENS to disable endpoint security protections, bypassing AMSI and other defenses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-7261?
CVE-2020-7261 is a medium-severity memory corruption vulnerability in McAfee Endpoint Security (ENS), published on 15 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Buffer Overflow via Environment Variables vulnerability in AMSI component in McAfee Endpoint Security (ENS) Prior to 10.7.0 February 2020 Update allows local users to disable Endpoint Security via a carefully crafted user input.
Which versions are affected by CVE-2020-7261?
It affects 1 product.
Products include Mcafee Endpoint Security.
How do I fix CVE-2020-7261?
No fix has been published for CVE-2020-7261 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-2020-7261 being exploited?
There is no known exploitation of CVE-2020-7261 in the wild and no public exploit code.
Other vulnerabilities in McAfee Endpoint Security (ENS)
- CVE-2020-7319 Improper Access Control Vulnerability in ENS for Windows
- CVE-2020-7264 Privilege Escalation vulnerability through symbolic links in ENS for Windows
- CVE-2020-7265 Privilege Escalation vulnerability through symbolic links in ENSM
- CVE-2019-3582 McAfee Endpoint Security updates fix a privilege escalation vulnerability
- CVE-2020-7257 Privilege Escalation vulnerability through Symbolic links in ENS
Sources
Also known as GHSA-x222-6c25-wc8w.