CVE-2020-14359 Keycloak Gatekeeper vulnerable to bypass on using lower case HTTP headers
Attackers can bypass Keycloak Gatekeeper authentication by using lowercase HTTP headers when deployed in front of servers like Jetty.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-14359?
CVE-2020-14359 is a high-severity authentication bypass vulnerability in keycloak, published on 23 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in all versions of Keycloak Gatekeeper, where on using lower case HTTP headers (via cURL) an attacker can bypass our Gatekeeper. Lower case headers are also accepted by some webservers (e.g. Jetty). This means there is no protection when we put a Gatekeeper in front of a Jetty server and use lowercase headers.
Weakness: CWE-305
Which versions are affected by CVE-2020-14359?
2 open source packages ship an affected version, including github.com/keycloak/keycloak-gatekeeper. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/keycloak/keycloak-gatekeeper Go | All versions to 1.2.8 | None |
github.com/keycloak/keycloak-gatekeeper Go | All versions to 1.2.8 | None |
Products include Redhat Louketo Proxy.
How do I fix CVE-2020-14359?
No fix has been published for CVE-2020-14359 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-14359 being exploited?
There is no known exploitation of CVE-2020-14359 in the wild and no public exploit code.
Sources
Also known as GHSA-jh6m-3pqw-242h.