# CVE-2018-10683: Auth bypass in n/a

> Attackers can access the WildFly server without authentication if the security realm is not configured, a state the vendor supports for development.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 May 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-rw67-4595-c74r

## What is CVE-2018-10683?

CVE-2018-10683 is a critical authentication bypass vulnerability in n/a, published on 9 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in WildFly 10.1.2.Final. In the case of a default installation without a security realm reference, an attacker can successfully access the server without authentication. NOTE: the Security Realms documentation in the product's Admin Guide indicates that "without a security realm reference" implies "effectively unsecured." The vendor explicitly supports these unsecured configurations because they have valid use cases during development

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2018-10683?

It affects 1 product.


Products: Redhat Wildfly.

## How do I fix CVE-2018-10683?

No fix has been published for CVE-2018-10683 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-10683 being exploited?

There is no known exploitation of CVE-2018-10683 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-10740](https://insights.sbomify.com/CVE-2020-10740/): Wildfly Unsafe Deserialization Vulnerability (medium 6.6)
- [CVE-2020-27822](https://insights.sbomify.com/CVE-2020-27822/): Wildfly has a memory leak vulnerability (medium 5.9)
- [CVE-2020-1719](https://insights.sbomify.com/CVE-2020-1719/): Privilege Context Switching Error in wildlfy (medium 5.4)
- [CVE-2020-25640](https://insights.sbomify.com/CVE-2020-25640/): Wildfly logs plaintext passwords (medium 5.3)
- [CVE-2018-14627](https://insights.sbomify.com/CVE-2018-14627/): Security feature bypass in JBoss/WildFly (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-10683 and fix it if it is affected.

What it is: CVE-2018-10683 is a critical authentication bypass vulnerability in n/a, published on 9 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-10683 in the wild and no public exploit code.

Affected product: n/a. 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-2018-10683/ (Markdown: https://insights.sbomify.com/CVE-2018-10683/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-10683
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-10683
- OSV: https://osv.dev/vulnerability/CVE-2018-10683

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-10683/
Summaries are generated and may contain mistakes; the official description above is the record.