CVE-2022-0084 XNIO `notifyReadClosed` method logging message to unexpected end
An attacker can cause disk fill-up or performance degradation by sending flawed requests that trigger excessive logging in the XNIO library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-0084?
CVE-2022-0084 is a high-severity denial of service vulnerability in Redhat Single Sign-On, published on 26 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 XNIO, specifically in the notifyReadClosed method. The issue revealed this method was logging a message to another expected end. This flaw allows an attacker to send flawed requests to a server, possibly causing log contention-related performance concerns or an unwanted disk fill-up.
Weakness: CWE-770
Which versions are affected by CVE-2022-0084?
2 open source packages ship an affected version, including org.jboss.xnio:xnio-all. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
org.jboss.xnio:xnio-all Maven | All versions to 3.8.7.Final | None |
org.jboss.xnio:xnio-all Maven | All versions to 3.8.7.Final | None |
Products include Redhat Integration Camel K, Redhat Integration Camel Quarkus, Redhat Single Sign-On, Redhat Xnio.
How do I fix CVE-2022-0084?
Upgrade to a fixed version.
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-2022-0084 being exploited?
There is no known exploitation of CVE-2022-0084 in the wild and no public exploit code.
Other vulnerabilities in Redhat Single Sign-On
Sources
Also known as DEBIAN-CVE-2022-0084, GHSA-76fg-mhrg-fmmg, OESA-2026-1047, UBUNTU-CVE-2022-0084.