CVE-2021-42330: Improper Authorization

The “Teacher Edit” function of ShinHer StudyOnline System does not perform authority control. After logging in with user’s privilege, remote attackers can access and edit other users’ credential and personal information by crafting URL parameters...

CVE-2021-42329: Improper Neutralization of Input During Web Page Generation

The “ListAdd” 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...