Path traversal in Japan Total System products - CVE-2021-20875
Published: January 4, 2022
Vulnerability identifier: #VU59178
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-20875
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Japan Total System
Affected software:
GroupSession Free edition
GroupSession byCloud
GroupSession ZION
GroupSession Free edition
GroupSession byCloud
GroupSession ZION
Detailed vulnerability description
The vulnerability allows a remote user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system.
How to mitigate CVE-2021-20875
Install update from vendor's website.