CVE-2021-33021 xArrow SCADA Cross-site Scripting
An unauthorized attacker can execute arbitrary code via cross-site scripting in the xArrow SCADA system's alarm resource.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-33021?
CVE-2021-33021 is a medium-severity cross-site scripting vulnerability in xArrow SCADA, published on 16 May 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
xArrow SCADA versions 7.2 and prior is vulnerable to cross-site scripting due to parameter ‘edate’ of the resource xhisalarm.htm, which may allow an unauthorized attacker to execute arbitrary code.
Weakness: CWE-79
Which versions are affected by CVE-2021-33021?
It affects 1 product.
Products include Xarrow Xarrow.
How do I fix CVE-2021-33021?
No fix has been published for CVE-2021-33021 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-2021-33021 being exploited?
There is no known exploitation of CVE-2021-33021 in the wild and no public exploit code.
Other vulnerabilities in xArrow SCADA
Sources
Also known as GHSA-8c36-rqcc-rv4q.