CVE-2020-15646

Mozilla: Automatic account setup leaks Microsoft Exchange login credentials

Severity Score

5.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.

Si un atacante intercepta el intento inicial de Thunderbird de llevar a cabo los ajustes automáticos de la cuenta mediante el mecanismo de detección automática de Microsoft Exchange, y el atacante envía una respuesta diseñada, entonces Thunderbird envía el nombre de usuario y contraseña por medio de https hacia un servidor controlado por el atacante. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.10.0

*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

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

2020-07-10 CVE Reserved
2020-10-08 CVE Published
2023-06-24 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.mozilla.org/security/advisories/mfsa2020-26	2021-07-21
https://access.redhat.com/security/cve/CVE-2020-15646	2020-07-21
https://bugzilla.redhat.com/show_bug.cgi?id=1854036	2020-07-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 68.10.0 Search vendor "Mozilla" for product "Thunderbird" and version " < 68.10.0"		-		Affected