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Security Advisory

Security advisory - Unauthenticated and authenticated REC vulnerability (CVE-2021-33055) in ManageEngine ADSelfService Plus

Unauthenticated and authenticated remote code execution vulnerabilities (CVE-2021-33055) were discovered in ADSelfService Plus and have been fixed.

What is the issue?

ADSelfService Plus employs PowerShell scripts to achieve the functionality of features such as password synchronization. Unicode's General Punctuation block contains symbols composed of multiple single-quotes and double-quotes. When these symbols are included in PowerShell scripts, they can be used to begin and end strings. However since these symbols are not considered as Unicode-encoded by PowerShell, they may be misused to perform PowerShell injection attacks.

What are the ADSelfService Plus versions affected by this vulnerability?

ADSelfService Plus builds 6102 and below are affected by this.

How severe is this vulnerability?

This is a critical issue.

Is there a fix for this vulnerability?

We have fixed this vulnerability in build 6105 of ADSSP. Update to the latest version of ADSelfService Plus using the service pack.


This issue was reported by STM Cyber via BugBounty.

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Password self-service

Free Active Directory users from attending lengthy help desk calls by allowing them to self-service their password resets/ account unlock tasks. Hassle-free password change for Active Directory users with ADSelfService Plus ‘Change Password’ console. 

One identity with Single sign-on

Get seamless one-click access to 100+ cloud applications. With enterprise single sign-on, users can access all their cloud applications with their Active Directory credentials. Thanks to ADSelfService Plus! 

Password/Account Expiry Notification

Intimate Active Directory users of their impending password/account expiry by mailing them these password/account expiry notifications.

Password Synchronizer

Synchronize Windows Active Directory user password/account changes across multiple systems, automatically, including Office 365, G Suite, IBM iSeries and more. 

Password Policy Enforcer

Ensure strong user passwords that resist various hacking threats with ADSelfService Plus by enforcing Active Directory users to adhere to compliant passwords via displaying password complexity requirements.

Directory Self-UpdateCorporate Search

Portal that lets Active Directory users update their latest information and a quick search facility to scout for information about peers by using search keys, like contact number, of the personality being searched.

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