Improper Authorization in Zoho ManageEngine ADSelfService Plus - CVE-2021-37421
Published: September 2, 2021
Vulnerability identifier: #VU56257
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-37421
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to an error when handling the X-Forwarded-For HTTP header information while accessing the admin portal, if access restrictions are based on IP addresses. A remote attacker can pass an IP address from the whitelist via the X-Forwarded-For HTTP header while accessing the web interface from another IP address, bypass IP-based access restrictions and gain unauthorized access to the admin web interface.
Affected software
Zoho ManageEngine ADSelfService Plus
How to mitigate CVE-2021-37421
Install updates from vendor's website.
Zoho ManageEngine ADSelfService Plus - update to 6104