CVE-2021-42335 Huachu Digital Technology Co.,Ltd. Easytest - Stored XSS
Remote attackers with user privileges can inject JavaScript into the bulletin board, leading to stored XSS attacks on the Easytest online learning platform.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-42335?
CVE-2021-42335 is a medium-severity cross-site scripting vulnerability in Huachu Digital Technology Co.,Ltd. Easytest, published on 15 Oct 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Easytest bulletin board management function of online learning platform does not filter special characters. After obtaining a user’s privilege, remote attackers can inject JavaScript and execute stored XSS attack.
Weakness: CWE-79
Which versions are affected by CVE-2021-42335?
It affects 1 product.
Products include Huaju Easytest Online Learning Test Platform.
How do I fix CVE-2021-42335?
No fix has been published for CVE-2021-42335 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-2021-42335 being exploited?
There is no known exploitation of CVE-2021-42335 in the wild and no public exploit code.
Other vulnerabilities in Huachu Digital Technology Co.,Ltd. Easytest
Sources
Also known as GHSA-89rc-4jgm-q84x.