CVE-2021-40539 Zoho ManageEngine ADSelfService Plus Authentication Bypass
Attackers can bypass REST API authentication to achieve remote code execution on Zoho ManageEngine ADSelfService Plus servers.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40539?
CVE-2021-40539 is a critical authentication bypass vulnerability in Zohocorp Manageengine Adselfservice Plus, published on 7 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.
Weakness: CWE-706
Which versions are affected by CVE-2021-40539?
It affects 1 product.
Products include Zohocorp Manageengine Adselfservice Plus.
How do I fix CVE-2021-40539?
No fix has been published for CVE-2021-40539 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Nov 2021.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-40539 being exploited?
Yes. Attackers have exploited CVE-2021-40539 in the wild since at least 3 Nov 2021, including in ransomware campaigns.
Public exploit code: 1 Metasploit module, 1 Nuclei template and 5 proofs of concept on GitHub.
Other vulnerabilities in Zohocorp Manageengine Adselfservice Plus
- CVE-2022-28810 Zoho ManageEngine ADSelfService Plus Remote Code Execution
- CVE-2019-3905 Server-side request forgery in n/a
- CVE-2023-35854 Auth bypass in n/a
- CVE-2021-37422 SQL injection in n/a
- CVE-2021-37423 Auth bypass in n/a
All Zohocorp Manageengine Adselfservice Plus vulnerabilities
Sources
Also known as GHSA-gww8-rh9f-5mjq.