CVE-2020-15233

OAuth2 Redirect URL validity does not respect query parameters and character casing for loopback addresses

State: Published
Severity: 6.1 Medium
Published: Oct 2, 2020
Updated: Aug 4, 2024
Reserved: Jun 25, 2020

Description

ORY Fosite is a security first OAuth2 & OpenID Connect framework for Go. In Fosite from version 0.30.2 and before version 0.34.1, there is an issue in which an an attacker can override the registered redirect URL by performing an OAuth flow and requesting a redirect URL that is to the loopback adapter. Attackers can provide both custom URL query parameters to their loopback redirect URL, as well as actually overriding the host of the registered redirect URL. These attacks are only applicable in scenarios where the attacker has access over the loopback interface. This vulnerability has been patched in ORY Fosite v0.34.1.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-20 {"CWE-20":"Improper Input Validation"}
CWE-601 {"CWE-601":"URL Redirection to Untrusted Site ('Open Redirect')"}

Affected Products

Product	Versions
fositeory	< 0.34.1Affected

References

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