CVE-2021-42329 ShinHer Information Co., LTD. ShinHer StudyOnline System - Stored XSS
Remote attackers with user privileges can inject JavaScript into the message board title, leading to stored XSS attacks.
- 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-2021-42329?
CVE-2021-42329 is a medium-severity cross-site scripting vulnerability in ShinHer StudyOnline System, 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
The “List_Add” function of message board of ShinHer StudyOnline System does not filter special characters in the title parameter. After logging in with user’s privilege, remote attackers can inject JavaScript and execute stored XSS attacks.
Weakness: CWE-79
Which versions are affected by CVE-2021-42329?
It affects 1 product.
Products include Xinheinformation Xinhe Teaching Platform System.
How do I fix CVE-2021-42329?
No fix has been published for CVE-2021-42329 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-2021-42329 being exploited?
There is no known exploitation of CVE-2021-42329 in the wild and no public exploit code.
Other vulnerabilities in ShinHer StudyOnline System
Sources
Also known as GHSA-x6v4-jh5f-25pv.