High severity · published Aug 9, 2021
CVE-2021-33256
A CSV injection vulnerability on the login panel of ManageEngine ADSelfService Plus Version: 6.1 Build No: 6101 can be exploited by an unauthenticated user
8.8
CVSS
79%
EPSS
No
On KEV
Description
A CSV injection vulnerability on the login panel of ManageEngine ADSelfService Plus Version: 6.1 Build No: 6101 can be exploited by an unauthenticated user. The j_username parameter seems to be vulnerable and a reverse shell could be obtained if a privileged user exports "User Attempts Audit Report" as CSV file. Note: The vendor disputes this vulnerability, claiming "This is not a valid vulnerability in our ADSSP product. We don't see this as a security issue at our side.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)79.0% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
ManageEngine ADSelfService Plus · Zoho
6.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33256
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33256
Exploit
https://docs.unsafe-inline.com/0day/manageengine-adselfservice-plus-6.1-csv-injection
More from ManageEngine ADSelfService Plus
9.8
CVE-2022-47966
Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability
9.8
CVE-2022-35405
Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability
9.8
CVE-2021-40539
Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability
9.8
CVE-2020-10189
Zoho ManageEngine Desktop Central File Upload Vulnerability
6.8
CVE-2022-28810
Zoho ManageEngine ADSelfService Plus Remote Code Execution Vulnerability