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 |
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. PROOFPOINT RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for authorized subscribers to Proofpoint products and services.