CVE-2021-26077
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Summary
Broken Authentication in Atlassian Connect Spring Boot (ACSB) in version 1.1.0 before 2.1.3 and from version 2.1.4 before 2.1.5: Atlassian Connect Spring Boot is a Java Spring Boot package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Spring Boot app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Spring Boot versions 1.1.0 before 2.1.3 and versions 2.1.4 before 2.1.5 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Atlassian | Atlassian Connect Spring Boot (ACSB) | 1.1.0 < unspecified | affected |
| Atlassian | Atlassian Connect Spring Boot (ACSB) | unspecified < 2.1.3 | affected |
| Atlassian | Atlassian Connect Spring Boot (ACSB) | 2.1.4 < unspecified | affected |
| Atlassian | Atlassian Connect Spring Boot (ACSB) | unspecified < 2.1.5 | affected |
Weaknesses
- Broken Authentication
ADP Enrichment
CVE Program Container
Additional References
- https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-allows-bypass-of-app-qsh-verification-via-context-jwts/47072
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1063555147
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-allows-bypass-of-app-qsh-verification-via-context-jwts/47072
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1063555147
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