CVE-2021-22101 Denial of service in Cloud Foundry Cloud Controller
Unauthenticated attackers can cause denial of service in Cloud Foundry Cloud Controller by sending crafted REST requests that generate enormous SQL queries.
- 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-2021-22101?
CVE-2021-22101 is a high-severity denial of service vulnerability in Cloud Foundry Cloud Controller, published on 27 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cloud Controller versions prior to 1.118.0 are vulnerable to unauthenticated denial of Service(DoS) vulnerability allowing unauthenticated attackers to cause denial of service by using REST HTTP requests with label_selectors on multiple V3 endpoints by generating an enormous SQL query.
Weakness: CWE-400
Which versions are affected by CVE-2021-22101?
It affects 2 products.
Products include Cloudfoundry Capi-Release, Cloudfoundry Cf-Deployment.
How do I fix CVE-2021-22101?
No fix has been published for CVE-2021-22101 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-22101 being exploited?
There is no known exploitation of CVE-2021-22101 in the wild and no public exploit code.
Other vulnerabilities in Cloud Foundry Cloud Controller
Sources
Also known as GHSA-cjhg-rj52-r938.