CVE-2021-37843

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The resolution SAML SSO apps for Atlassian products allow a remote attacker to login to a user account when only the username is known (i.e., no other authentication is provided). The fixed versions are for Jira: 3.6.6.1, 4.0.12, 5.0.5; for Confluence 3.6.6, 4.0.12, 5.0.5; for Bitbucket 2.5.9, 3.6.6, 4.0.12, 5.0.5; for Bamboo 2.5.9, 3.6.6, 4.0.12, 5.0.5; and for Fisheye 2.5.9.

Las aplicaciones SAML SSO de resolución para los productos de Atlassian permiten a un atacante remoto acceder a una cuenta de usuario cuando sólo se conoce el nombre de usuario (es decir, no se proporciona ninguna otra autenticación). Las versiones corregidas son para Jira: 3.6.6.1, 4.0.12, 5.0.5; para Confluence 3.6.6, 4.0.12, 5.0.5; para Bitbucket 2.5.9, 3.6.6, 4.0.12, 5.0.5; para Bamboo 2.5.9, 3.6.6, 4.0.12, 5.0.5; y para Fisheye 2.5.9

*Credits: N/A

CVSS Scores

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

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

2021-08-02 CVE Reserved
2021-08-02 CVE Published
2024-04-17 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-306: Missing Authentication for Critical Function

CAPEC

References (1)

URL	Tag	Source
https://wiki.resolution.de/doc/saml-sso/5.0.x/all/security-advisories/2021-07-29-authentication-bypass-network-attacker-can-login-to-users-accounts-when-usernames-are-known	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				< 2.5.9 Search vendor "Atlassian" for product "Saml Single Sign On" and version " < 2.5.9"		bamboo		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				< 2.5.9 Search vendor "Atlassian" for product "Saml Single Sign On" and version " < 2.5.9"		bitbucket		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				< 2.5.9 Search vendor "Atlassian" for product "Saml Single Sign On" and version " < 2.5.9"		fisheye		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				< 3.5.6 Search vendor "Atlassian" for product "Saml Single Sign On" and version " < 3.5.6"		confluence		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				< 3.6.6.1 Search vendor "Atlassian" for product "Saml Single Sign On" and version " < 3.6.6.1"		jira		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 3.0.0 < 3.6.6 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 3.0.0 < 3.6.6"		bamboo		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 3.0.0 < 3.6.6 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 3.0.0 < 3.6.6"		bitbucket		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 3.6.0 < 3.6.6.1 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 3.6.0 < 3.6.6.1"		confluence		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 4.0.0 < 4.0.12 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 4.0.0 < 4.0.12"		bamboo		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 4.0.0 < 4.0.12 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 4.0.0 < 4.0.12"		bitbucket		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 4.0.0 < 4.0.12 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 4.0.0 < 4.0.12"		confluence		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 4.0.0 < 4.0.12 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 4.0.0 < 4.0.12"		jira		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 5.0.0 < 5.0.5 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 5.0.0 < 5.0.5"		bamboo		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 5.0.0 < 5.0.5 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 5.0.0 < 5.0.5"		bitbucket		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 5.0.0 < 5.0.5 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 5.0.0 < 5.0.5"		confluence		Affected
Atlassian Search vendor "Atlassian"		Saml Single Sign On Search vendor "Atlassian" for product "Saml Single Sign On"				>= 5.0.0 < 5.0.5 Search vendor "Atlassian" for product "Saml Single Sign On" and version " >= 5.0.0 < 5.0.5"		jira		Affected