CVE-2021-23881 Stored Cross Site Scripting in ENS
An administrator can inject scripts into policy events that execute in a browser block page when triggered by a local user.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-23881?
CVE-2021-23881 is a medium-severity cross-site scripting vulnerability in McAfee LLC Endpoint Security (ENS) for Windows, published on 10 Feb 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A stored cross site scripting vulnerability in ePO extension of McAfee Endpoint Security (ENS) prior to 10.7.0 February 2021 Update allows an ENS ePO administrator to add a script to a policy event which will trigger the script to be run through a browser block page when a local non-administrator user triggers the policy.
Weakness: CWE-79
Which versions are affected by CVE-2021-23881?
It affects 1 product.
Products include Mcafee Endpoint Security.
How do I fix CVE-2021-23881?
No fix has been published for CVE-2021-23881 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-23881 being exploited?
There is no known exploitation of CVE-2021-23881 in the wild and no public exploit code.
Other vulnerabilities in McAfee LLC Endpoint Security (ENS) for Windows
- 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-ffrc-37fw-2f8x.