Vulnerability · Published Apr 21, 2021 · Assigned by GitHub_M
CVE-2021-29456Authelia allows open redirects on the logout endpoint
Medium 5.7
In plain English
A medium-severity open redirect in authelia from authelia. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Authelia is an open-source authentication and authorization server providing 2-factor authentication and single sign-on (SSO) for your applications via a web portal. In versions 4.27.4 and earlier, utilizing a HTTP query parameter an attacker is able to redirect users from the web application to any domain, including potentially malicious sites. This security issue does not directly impact the security of the web application itself. As a workaround, one can use a reverse proxy to strip the query parameter from the affected endpoint. There is a patch for version 4.28.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/authelia/authelia/v4 | 4.28.0 | GHSA-36f2-fcrx-fp4j |
Affected products (as reported)
Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
References
- https://github.com/authelia/authelia/security/advisories/GHSA-36f2-fcrx-fp4j x_refsource_CONFIRM