CVE-2021-26077
CVSS V2 Medium 6.5
CVSS V3 High 8.8
Description
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.
Overview
- CVE ID
- CVE-2021-26077
- Assigner
- security@atlassian.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-05-10T00:15:07
- Last Modified Date
- 2021-05-18T17:43:50
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:atlassian:connect_spring_boot:*:*:*:*:*:*:*:* | 1 | OR | 1.1.0 | 2.1.3 |
| cpe:2.3:a:atlassian:connect_spring_boot:*:*:*:*:*:*:*:* | 1 | OR | 2.1.4 | 2.1.5 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://confluence.atlassian.com/pages/viewpage.action?pageId=1063555147 | Vendor Advisory |
| https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-allows-bypass-of-app-qsh-verification-via-context-jwts/47072 | Exploit Issue Tracking Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-26077 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26077 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:15:44 | Added to TrackCVE | |||
| 2022-12-05 01:52:58 | 2021-05-10T00:15Z | 2021-05-10T00:15:07 | CVE Published Date | updated |
| 2022-12-05 01:52:58 | 2021-05-18T17:43:50 | CVE Modified Date | updated | |
| 2022-12-05 01:52:58 | Analyzed | Vulnerability Status | updated |