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Advisory Updated on APT Exploitation of ManageEngine ADSelfService Plus Vulnerability

CISA encourages organizations to review the update the November 19 update and apply the recommended mitigations.

The Federal Bureau of Investigation (FBI), CISA, and Coast Guard Cyber Command (CGCYBER) have updated the Joint Cybersecurity Advisory (CSA) published on September 16, 2021, which details the active exploitation of an authentication bypass vulnerability (CVE-2021-40539) in Zoho ManageEngine ADSelfService Plus—a self-service password management and single sign-on solution.

The update provides details on a suite of tools APT actors are using to enable this campaign:

  • Dropper: a dropper trojan that drops Godzilla webshell on a system
  • Godzilla: a Chinese language web shell
  • NGLite: a backdoor trojan written in Go
  • KdcSponge: a tool that targets undocumented APIs in Microsoft’s implementation of Kerberos for credential exfiltration

Note: FBI, CISA, and CGCYBER cannot confirm the CVE-2021-40539 is the only vulnerability APT actors are leveraging as part of this activity, so it is key that network defenders focus on detecting the tools listed above in addition to initial access vector.

CISA encourages organizations to review the update the November 19 update and apply the recommended mitigations. CISA also recommends reviewing the relevant blog posts from Palo Alto NetworksMicrosoft, and IBM Security Intelligence.

Read more at CISA

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The Government Technology & Services Coalition's Homeland Security Today (HSToday) is the premier news and information resource for the homeland security community, dedicated to elevating the discussions and insights that can support a safe and secure nation. A non-profit magazine and media platform, HSToday provides readers with the whole story, placing facts and comments in context to inform debate and drive realistic solutions to some of the nation’s most vexing security challenges.

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