Original release date: April 20, 2021
CISA is aware of ongoing exploitation of Ivanti Pulse Connect Secure vulnerabilities compromising U.S. government agencies, critical infrastructure entities, and private sector organizations.
In response, CISA has released Alert AA21-110A: Exploitation of Pulse Connect Secure Vulnerabilities to offer technical details regarding this activity. Ivanti has provided a mitigation and is developing a patch.
CISA strongly encourages organizations using Ivanti Pulse Connect Secure appliances to follow the guidance in Alert AA21-110A, which includes:
- Running the Ivanti Integrity Checker Tool
- Updating their Pulse Connect Secure appliance to the latest software version
- Implementing the mitigation provided by Ivanti Pulse Secure (if evidence of comprise is found)
For additional information regarding this ongoing exploitation, see the FireEye blog post: Check Your Pulse: Suspected APT Actors Leverage Authentication Bypass Techniques and Pulse Secure Zero-Day.