CVE-2020-27836 Missing authorization in cluster-ingress-operator
An attacker can bypass IP source range restrictions in the router-default service to access restricted resources, compromising confidentiality, integrity, and availability.
- 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-2020-27836?
CVE-2020-27836 is a critical missing authorization vulnerability in Redhat Openshift Container Platform, published on 22 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in cluster-ingress-operator. A change to how the router-default service allows only certain IP source ranges could allow an attacker to access resources that would otherwise be restricted to specified IP ranges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability..
Weakness: CWE-732
Which versions are affected by CVE-2020-27836?
It affects 1 product.
Products include Redhat Openshift Container Platform.
How do I fix CVE-2020-27836?
No fix has been published for CVE-2020-27836 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-27836 being exploited?
There is no known exploitation of CVE-2020-27836 in the wild and no public exploit code.
Other vulnerabilities in Redhat Openshift Container Platform
- CVE-2018-1085 Misconfiguration in openshift-ansible
- CVE-2026-54099 Privilege escalation in Red Hat OpenShift Container Platform 4
- CVE-2026-1784 Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection
- CVE-2021-20182 Privilege escalation in openshift
- CVE-2019-0542 xterm vulnerable to remote code execution