Insider Threat Management Agent Improper Certificate Validation Vulnerability

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.

URL

https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004

Revision History

Version Description Section Date
1.0 Initial release   April 6, 2021

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