# CVE-2020-14297: Wildfly EJB Client causes DoS

> An attacker can cause a denial of service in Wildfly EJB Client by accumulating transaction objects, leading to service unavailability.

- **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:** 15 Oct 2024
- **Also known as:** GHSA-qcch-9268-59jw

## What is CVE-2020-14297?

CVE-2020-14297 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 flaw was discovered in Wildfly's EJB Client as shipped with Red Hat JBoss EAP 7, where some specific EJB transaction objects may get accumulated over the time and can cause services to slow down and eventaully unavailable. An attacker can take advantage and cause denial of service attack and make services unavailable.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2020-14297?

2 open source packages ship an affected version, including org.jboss:jboss-ejb-client. It affects 6 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.jboss:jboss-ejb-client` | Maven | All versions | 4.0.34.Final |
| `org.jboss:jboss-ejb-client` | Maven | All versions | 4.0.34.Final |

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

## How do I fix CVE-2020-14297?

Upgrade org.jboss:jboss-ejb-client to 4.0.34.Final or later.

## Is CVE-2020-14297 being exploited?

There is no known exploitation of CVE-2020-14297 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-2020-14307](https://insights.sbomify.com/CVE-2020-14307/): Denial of service in wildfly (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-14297 and fix it if it is affected.

What it is: CVE-2020-14297 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-2020-14297 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.jboss:jboss-ejb-client (Maven): affected all versions; fixed in 4.0.34.Final
- org.jboss:jboss-ejb-client (Maven): affected all versions; fixed in 4.0.34.Final

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-2020-14297/ (Markdown: https://insights.sbomify.com/CVE-2020-14297/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-14297
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-14297
- OSV: https://osv.dev/vulnerability/CVE-2020-14297

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-14297/
Summaries are generated and may contain mistakes; the official description above is the record.