CVE-2020-24661

Severity Score

5.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

GNOME Geary before 3.36.3 mishandles pinned TLS certificate verification for IMAP and SMTP services using invalid TLS certificates (e.g., self-signed certificates) when the client system is not configured to use a system-provided PKCS#11 store. This allows a meddler in the middle to present a different invalid certificate to intercept incoming and outgoing mail.

GNOME Geary versiones anteriores a 3.36.3, maneja inapropiadamente la verificación del certificado TLS anclado para servicios IMAP y SMTP usando certificados TLS no válidos (por ejemplo, certificados autofirmados) cuando el sistema cliente no está configurado para usar una tienda PKCS#11 proporcionada por el sistema. Esto permite a un atacante de tipo meddler in the middle presentar un certificado no válido diferente para interceptar el correo entrante y saliente

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-26 CVE Reserved
2020-08-26 CVE Published
2023-11-08 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-295: Improper Certificate Validation

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC
https://gitlab.gnome.org/GNOME/geary/-/issues/866	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7OTYTGND6EFOKNQJWCHKKXKSN7SM73Y	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26	2023-11-07
https://tools.cisco.com/security/center/content/CiscoSeg/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gnome Search vendor "Gnome"		Geary Search vendor "Gnome" for product "Geary"				< 3.36.3 Search vendor "Gnome" for product "Geary" and version " < 3.36.3"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected