CVE-2021-27899

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.

CVSS v3 7.4 HIGH
CVSS v2.0 5.8 MEDIUM

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004	Vendor Advisory
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:proofpoint:insider_threat_management::::::linux::*
	cpe:2.3:a:proofpoint:insider_threat_management::::::linux::*
	cpe:2.3:a:proofpoint:insider_threat_management::::::linux::*

Configuration 2 (hide)

OR	cpe:2.3:a:proofpoint:insider_threat_management::::::macos::*
	cpe:2.3:a:proofpoint:insider_threat_management::::::macos::*
	cpe:2.3:a:proofpoint:insider_threat_management::::::macos::*

History

21 Nov 2024, 05:58

Type	Values Removed	Values Added
References	~~() https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004 - Vendor Advisory~~	() https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004 - Vendor Advisory

Information

Published : 2021-04-06 21:15

Updated : 2024-11-21 05:58

NVD link : CVE-2021-27899

Mitre link : CVE-2021-27899

CVE.ORG link : CVE-2021-27899

JSON object : View

Products Affected

proofpoint

insider_threat_management

CWE

CWE-295

Improper Certificate Validation

{"id": "CVE-2021-27899", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.2}]}, "published": "2021-04-06T21:15:14.457", "references": [{"url": "https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2021-0004", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-295"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Los Agentes Proofpoint Insider Threat Management (anteriormente ObserveIT Agent) para MacOS y Linux llevan a cabo una comprobaci\u00f3n inapropiada del certificado del servidor ITM, lo que permite a un atacante remoto interceptar y alterar estas comunicaciones usando un ataque de tipo man-in-the-middle. Todas las versiones anteriores a 7.11.1 est\u00e1n afectadas. Los agentes para Windows y Cloud no est\u00e1n afectados"}], "lastModified": "2024-11-21T05:58:43.673", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:linux:*:*", "vulnerable": true, "matchCriteriaId": "70F9F339-8379-49A8-9064-8C450A711296", "versionEndExcluding": "7.9.3", "versionStartIncluding": "7.9.0"}, {"criteria": "cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:linux:*:*", "vulnerable": true, "matchCriteriaId": "BACB225E-FD08-4293-9D17-BC8127470D08", "versionEndExcluding": "7.10.3", "versionStartIncluding": "7.10.0"}, {"criteria": "cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:linux:*:*", "vulnerable": true, "matchCriteriaId": "81FDC89F-6AC6-4443-BB93-39F895616CD4", "versionEndExcluding": "7.11.1", "versionStartIncluding": "7.11.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "BC1EC9C0-B91B-423D-82CA-3F70C5C39736", "versionEndExcluding": "7.9.3", "versionStartIncluding": "7.9.0"}, {"criteria": "cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "B1B2503C-1C61-4230-9454-2E1B9AE83E93", "versionEndExcluding": "7.10.3", "versionStartIncluding": "7.10.0"}, {"criteria": "cpe:2.3:a:proofpoint:insider_threat_management:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "E235C6A9-A97F-4775-9A7B-E8EC11F20B16", "versionEndExcluding": "7.11.1", "versionStartIncluding": "7.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}