CVE-2021-26077

8.8HIGH

Key Information:

Vendor
Atlassian
Status
Atlassian Connect Spring Boot (acsb)
Vendor
CVE Published:
10 May 2021

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 Version(s)

Atlassian Connect Spring Boot (ACSB) 1.1.0

Atlassian Connect Spring Boot (ACSB) < 2.1.3

Atlassian Connect Spring Boot (ACSB) 2.1.4

References

https://community.developer.atlassian.com/t/action-requir...
x_refsource_MISC
https://confluence.atlassian.com/pages/viewpage.action?pa...
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.