Security Advisories

Insider Threat Management Agent Improper Certificate Validation Vulnerability, CVE-2021-27899

Advisory ID: PFPT-SA-2021-0004

The Proofpoint Insider Threat Management Agents (formerly ObserveIT Agent) for MacOS and Linux perform improper validation of the ITM Server's certificate, which enables a remote attacker to intercept and alter these communications using a man-in-the-middle attack. All versions before 7.11.1 are affected. Agents for Windows and Cloud are not affected.

Vulnerability Information

This vulnerability is identified by CVE-2021-27899. Proofpoint has released patches to address this issue.

This vulnerability has been assigned a CVSS score of 7.4:

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Fixed Software

Proofpoint has released fixes in versions 7.9.3, 7.10.3, and 7.11.1.

The fixed software versions are now available through the customer support portal.

Revision History

Version Description Section Date
1.0 Initial release   April 6, 2021

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