CVE-2020-26030

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://zammad.com/news/security-advisory-zaa-2020-18	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*

History

29 Dec 2020, 14:31

Type	Values Removed	Values Added
CWE		CWE-287
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8
CPE		cpe:2.3:a:zammad:zammad::::::::
References	~~(MISC) https://zammad.com/news/security-advisory-zaa-2020-18 -~~	(MISC) https://zammad.com/news/security-advisory-zaa-2020-18 - Vendor Advisory

28 Dec 2020, 13:58

Type	Values Removed	Values Added
New CVE

Information

Published : 2020-12-28 08:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-26030

Mitre link : CVE-2020-26030

CVE.ORG link : CVE-2020-26030

JSON object : View

Products Affected

zammad

zammad

CWE

CWE-287

Improper Authentication

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