CVE-2020-26030

Severity Score

9.8

*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 Zammad before 3.4.1. There is an authentication bypass in the SSO endpoint via a crafted header, when SSO is not configured. An attacker can create a valid and authenticated session that can be used to perform any actions in the name of other users.

Se detectó un problema en Zammad versiones anteriores a 3.4.1. Se presenta una omisión de autenticación en el endpoint de SSO por medio de un encabezado diseñado, cuando la SSO no está configurada. Un atacante puede crear una sesión válida y autenticada que puede ser usada para llevar a cabo algunas acciones en el nombre de otros usuarios

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-09-24 CVE Reserved
2020-12-28 CVE Published
2023-09-27 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://zammad.com/news/security-advisory-zaa-2020-18	2020-12-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zammad Search vendor "Zammad"		Zammad Search vendor "Zammad" for product "Zammad"				>= 1.0.0 < 3.4.1 Search vendor "Zammad" for product "Zammad" and version " >= 1.0.0 < 3.4.1"		-		Affected