CVE-2020-12618

Severity Score

4.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

eM Client before 7.2.33412.0 automatically imported S/MIME certificates and thereby silently replaced existing ones. This allowed a man-in-the-middle attacker to obtain an email-validated S/MIME certificate from a trusted CA and replace the public key of the entity to be impersonated. This enabled the attacker to decipher further communication. The entire attack could be accomplished by sending a single email.

eM Client versiones anteriores a 7.2.33412.0 importaba automáticamente certificados S/MIME y, por lo tanto, reemplazaba silenciosamente los existentes. Esto permitió a un atacante de tipo man-in-the-middle obtener un certificado S/MIME comprobado por correo electrónico de una CA confiable y reemplazar la clave pública de la entidad a ser suplantada. Esto permitió al atacante descifrar más comunicaciones. Todo el ataque podría ser logrado mediante el envío de un solo correo electrónico.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-05-01 CVE Reserved
2020-08-20 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (2)

URL	Tag	Source
https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2020/08/15/mailto-paper.pdf	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.emclient.com/release-history	2021-07-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Emclient Search vendor "Emclient"		Em Client Search vendor "Emclient" for product "Em Client"				< 7.2.33412.0 Search vendor "Emclient" for product "Em Client" and version " < 7.2.33412.0"		-		Affected