CVE-2021-26073
CVSS V2 Medium 4
CVSS V3 High 7.7
Description
Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 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.
Overview
- CVE ID
- CVE-2021-26073
- Assigner
- security@atlassian.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-04-16T03:15:12
- Last Modified Date
- 2022-03-01T16:23:58
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:atlassian:connect_express:*:*:*:*:*:node.js:*:* | 1 | OR | 3.0.2 | 6.6.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 7.7
- Base Severity
- HIGH
- Exploitability Score
- 3.1
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099 | Vendor Advisory |
| https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[…]ypass-of-app-qsh-verification-via-context-jwts/47072 | Issue Tracking Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20210604-0004/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-26073 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26073 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:47:58 | Added to TrackCVE | |||
| 2022-12-06 02:03:07 | 2021-04-16T03:15Z | 2021-04-16T03:15:12 | CVE Published Date | updated |
| 2022-12-06 02:03:07 | 2022-03-01T16:23:58 | CVE Modified Date | updated | |
| 2022-12-06 02:03:07 | Analyzed | Vulnerability Status | updated |