CVE-2021-42331 ShinHer Information Co., LTD. ShinHer StudyOnline System - Improper Authorization-2
Remote attackers can edit other users' tutorial schedules by bypassing permission controls in the Study Edit function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42331?
CVE-2021-42331 is a medium-severity missing authorization vulnerability in ShinHer StudyOnline System, published on 15 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The “Study Edit” function of ShinHer StudyOnline System does not perform permission control. After logging in with user’s privilege, remote attackers can access and edit other users’ tutorial schedule by crafting URL parameters.
Which versions are affected by CVE-2021-42331?
It affects 1 product.
Products include Xinheinformation Xinhe Teaching Platform System.
How do I fix CVE-2021-42331?
No fix has been published for CVE-2021-42331 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-42331 being exploited?
There is no known exploitation of CVE-2021-42331 in the wild and no public exploit code.
Other vulnerabilities in ShinHer StudyOnline System
Sources
Also known as GHSA-wxc7-jc57-c2hc.