CVE-2021-26074 - Broken authentication in Atlassian Connect Spring Boot (ACSB)
説明
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 between 1.1.0 - 2.1.2 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. This is fixed in version 2.1.3.
影響バージョン
1.1.0 - 2.1.2
修正済みバージョン
2.1.3
深刻度
This is an independent assessment and you should evaluate its applicability to your own IT environment.
CVSS v3 score: 9.1 => Critical severity
Exploitability Metrics
| 攻撃ベクトル | ネットワーク |
|---|---|
| 攻撃の複雑さ | 低 |
| 必要な権限 | 低 |
| ユーザー相互作用 | なし |
Scope Metric
| 範囲 | Changed |
|---|
Impact Metrics
| 機密性 | 高 |
|---|---|
| 整合性 | 低 |
| 可用性 | 低 |
https://asecurityteam.bitbucket.io/cvss_v3/#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L