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VULNERABILITIES

CVE-2021-27899 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004 CVEVendor Advisory
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-295Improper Certificate Validation[email protected]

Affected Products

ProductVersions
proofpoint insider threat management
>= 7.9.0, < 7.9.3
>= 7.10.0, < 7.10.3
>= 7.11.0, < 7.11.1

CPE

  • cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:linux:*:*
  • cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:macos:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-27899
NVD Published Date:
Apr 6, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-27899 Details - Not Deferred