CVE-2019-20634

Severity Score

3.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Proofpoint Email Protection through 2019-09-08. By collecting scores from Proofpoint email headers, it is possible to build a copy-cat Machine Learning Classification model and extract insights from this model. The insights gathered allow an attacker to craft emails that receive preferable scores, with a goal of delivering malicious emails.

Se detectó un problema en Proofpoint Email Protection hasta el 08-09-2019. Mediante la recopilación de puntajes de los encabezados de correo electrónico de Proofpoint, es posible construir un modelo Machine Learning Classification copy-cat y extraer información de este modelo. Los conocimientos capturados permiten a un atacante diseñar correos electrónicos que reciban puntajes preferenciales, con el propósito de entregar correos electrónicos maliciosos.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-30 CVE Reserved
2020-03-30 CVE Published
2024-02-02 EPSS Updated
2024-08-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-697: Incorrect Comparison

CAPEC

References (4)

URL	Tag	Source
https://github.com/moohax/Proof-Pudding	Third Party Advisory
https://github.com/moohax/Talks/blob/master/slides/DerbyCon19.pdf	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.proofpoint.com/us/security/CVE-2019-20634	2022-04-27
https://www.proofpoint.com/us/security/security-advisories/pfpt-sn-2020-0001	2022-04-27

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Proofpoint Search vendor "Proofpoint"		Email Protection Search vendor "Proofpoint" for product "Email Protection"				<= 2019-09-08 Search vendor "Proofpoint" for product "Email Protection" and version " <= 2019-09-08"		-		Affected