CVE-2021-26074

CVSS V2 Medium 4 CVSS V3 Medium 6.5
Description
Broken Authentication in Atlassian Connect Spring Boot (ACSB) from version 1.1.0 before version 2.1.3: 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 from version 1.1.0 before version 2.1.3 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-2021-26074
  • Assigner
  • security@atlassian.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-16T03:15:12
  • Last Modified Date
  • 2022-03-01T16:25:40
Weakness Enumerations
CWE URL
CWE-287 http://cwe.mitre.org/data/definitions/287.html
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
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:U/C:N/I:H/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986106 Vendor Advisory
https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-allows-bypass-of-app-qsh-verification-via-context-jwts/47072 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-26074
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26074
History
Created Old Value New Value Data Type Notes
2022-05-10 15:47:58 Added to TrackCVE
2022-12-06 02:03:11 2021-04-16T03:15Z 2021-04-16T03:15:12 CVE Published Date updated
2022-12-06 02:03:11 2022-03-01T16:25:40 CVE Modified Date updated
2022-12-06 02:03:11 Analyzed Vulnerability Status updated