CVE-2021-37843

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N
CVEADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 74%
VendorProductVersion
atlassiansaml_single_sign_on
𝑥
< 2.5.9
atlassiansaml_single_sign_on
𝑥
< 2.5.9
atlassiansaml_single_sign_on
𝑥
< 2.5.9
atlassiansaml_single_sign_on
𝑥
< 3.5.6
atlassiansaml_single_sign_on
𝑥
< 3.6.6.1
atlassiansaml_single_sign_on
3.0.0 ≤
𝑥
< 3.6.6
atlassiansaml_single_sign_on
3.0.0 ≤
𝑥
< 3.6.6
atlassiansaml_single_sign_on
3.6.0 ≤
𝑥
< 3.6.6.1
atlassiansaml_single_sign_on
4.0.0 ≤
𝑥
< 4.0.12
atlassiansaml_single_sign_on
4.0.0 ≤
𝑥
< 4.0.12
atlassiansaml_single_sign_on
4.0.0 ≤
𝑥
< 4.0.12
atlassiansaml_single_sign_on
4.0.0 ≤
𝑥
< 4.0.12
atlassiansaml_single_sign_on
5.0.0 ≤
𝑥
< 5.0.5
atlassiansaml_single_sign_on
5.0.0 ≤
𝑥
< 5.0.5
atlassiansaml_single_sign_on
5.0.0 ≤
𝑥
< 5.0.5
atlassiansaml_single_sign_on
5.0.0 ≤
𝑥
< 5.0.5
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
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
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