CVE-2020-15234

CVSS V2 Medium 4.9 CVSS V3 Medium 4.8
Description
ORY Fosite is a security first OAuth2 & OpenID Connect framework for Go. In Fosite before version 0.34.1, the OAuth 2.0 Client's registered redirect URLs and the redirect URL provided at the OAuth2 Authorization Endpoint where compared using strings.ToLower while they should have been compared with a simple string match. This allows an attacker to register a client with allowed redirect URL https://example.com/callback. Then perform an OAuth2 flow and requesting redirect URL https://example.com/CALLBACK. Instead of an error (invalid redirect URL), the browser is redirected to https://example.com/CALLBACK with a potentially successful OAuth2 response, depending on the state of the overall OAuth2 flow (the user might still deny the request for example). This vulnerability has been patched in ORY Fosite v0.34.1.
Overview
  • CVE ID
  • CVE-2020-15234
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-10-02T21:15:12
  • Last Modified Date
  • 2021-11-18T16:52:36
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:ory:fosite:*:*:*:*:*:*:*:* 1 OR 0.34.1
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:P/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 6.8
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 4.8
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.7
  • Impact Score
  • 2.7
History
Created Old Value New Value Data Type Notes
2022-05-10 06:45:53 Added to TrackCVE
2022-12-04 23:42:10 2020-10-02T21:15Z 2020-10-02T21:15:12 CVE Published Date updated
2022-12-04 23:42:10 2021-11-18T16:52:36 CVE Modified Date updated
2022-12-04 23:42:10 Analyzed Vulnerability Status updated