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://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7 | Product Third Party Advisory |
| https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-4mf2-f3wh-gvf2 | Exploit 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/commit/780ae4f3c99b579cb2ea9845121caebb6192f725 | Patch Third Party Advisory |
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Configurations
Information
Published : 2021-02-02 11:15
Updated : 2021-02-08 08:36
NVD link : CVE-2021-21291
Mitre link : CVE-2021-21291
JSON object : View
CWE
CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
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Products Affected
oauth2_proxy_project
- oauth2_proxy