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OpenAdvisories
Medium · 6.1 CVE-2020-15233 EUVD-2021-1179GHSA-rfq3-w54c-f9q5

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

Published Oct 2, 2020 · Updated Aug 4, 2024 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
ory fosite < 0.34.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/ory/fosite >= 0.30.3, < 0.34.1 0.34.1 GHSA-rfq3-w54c-f9q5

References