# CVE-2020-14307: Denial of service in wildfly

> An attacker can cause a denial of service in Wildfly EJB by exploiting a resource leak in the remote InvocationTracker.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q562-x7c7-5fc9

## What is CVE-2020-14307?

CVE-2020-14307 is a medium-severity denial of service vulnerability in Redhat Single Sign-On, published on 24 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in Wildfly's Enterprise Java Beans (EJB) versions shipped with Red Hat JBoss EAP 7, where SessionOpenInvocations are never removed from the remote InvocationTracker after a response is received in the EJB Client, as well as the server. This flaw allows an attacker to craft a denial of service attack to make the service unavailable.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2020-14307?

It affects 5 products.


Products: Redhat Amq, Redhat Jboss Enterprise Application Platform Continuous Delivery, Redhat Jboss Fuse, Redhat Openshift Application Runtimes, Redhat Single Sign-On.

## How do I fix CVE-2020-14307?

Apply the vendor's patch.

## Is CVE-2020-14307 being exploited?

There is no known exploitation of CVE-2020-14307 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Single Sign-On

- [CVE-2015-5182](https://insights.sbomify.com/CVE-2015-5182/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2022-1278](https://insights.sbomify.com/CVE-2022-1278/): WildFly vulnerable to Insecure Default Initialization of Resource (high 7.5)
- [CVE-2015-5183](https://insights.sbomify.com/CVE-2015-5183/): Security feature bypass in n/a (high 7.5)
- [CVE-2015-5184](https://insights.sbomify.com/CVE-2015-5184/): Misconfiguration in n/a (high 7.5)
- [CVE-2020-14297](https://insights.sbomify.com/CVE-2020-14297/): Wildfly EJB Client causes DoS (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-14307 and fix it if it is affected.

What it is: CVE-2020-14307 is a medium-severity denial of service vulnerability in Redhat Single Sign-On, published on 24 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-14307 in the wild and no public exploit code.

Affected product: Redhat Single Sign-On. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2020-14307/ (Markdown: https://insights.sbomify.com/CVE-2020-14307/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-14307
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-14307
- OSV: https://osv.dev/vulnerability/CVE-2020-14307

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-14307/
Summaries are generated and may contain mistakes; the official description above is the record.