OAuth2 Proxy is an open-source reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others) to validate accounts by email, domain or group. In OAuth2 Proxy before version 7.0.0, for users that use the whitelist domain feature, a domain that ended in a similar way to the intended domain could have been allowed as a redirect. For example, if a whitelist domain was configured for ".example.com", the intention is that subdomains of example.com are allowed. Instead, "example.com" and "badexample.com" could also match. This is fixed in version 7.0.0 onwards. As a workaround, one can disable the whitelist domain feature and run separate OAuth2 Proxy instances for each subdomain.
References
Link | Resource |
---|---|
https://github.com/oauth2-proxy/oauth2-proxy/commit/780ae4f3c99b579cb2ea9845121caebb6192f725 | Patch Third Party Advisory |
https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.0.0 | Release Notes Third Party Advisory |
https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-4mf2-f3wh-gvf2 | Exploit Third Party Advisory |
https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7 | Product Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-02-02T19:05:18
Updated: 2021-02-02T19:05:18
Reserved: 2020-12-22T00:00:00
Link: CVE-2021-21291
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-02-02T19:15:14.330
Modified: 2021-02-08T16:36:46.247
Link: CVE-2021-21291
JSON object: View
Redhat Information
No data.
CWE