# CVE-2016-6345: Exposure of Sensitive Information to an Unauthorized Actor in RESTEasy

> Authenticated attackers can obtain sensitive information from async jobs due to insufficient randomness in RESTEasy.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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:** 7 Sep 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-6345, GHSA-vxhj-3x7p-jxp5, UBUNTU-CVE-2016-6345

## What is CVE-2016-6345?

CVE-2016-6345 is a medium-severity vulnerability in n/a, published on 7 Sep 2016. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

RESTEasy allows remote authenticated users to obtain sensitive information by leveraging "insufficient use of random values" in async jobs.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2016-6345?

4 open source packages ship an affected version, including org.jboss.resteasy:resteasy-client. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.jboss.resteasy:resteasy-client` | Maven | All versions | 3.0.20.Final |
| `org.jboss.resteasy:resteasy-client` | Maven | All versions | 3.0.20.Final |
| `org.jboss.resteasy:resteasy-client` | Maven | From 3.1.0.Beta1 | 3.1.0.CR1 |
| `org.jboss.resteasy:resteasy-client` | Maven | From 3.1.0.Beta1 | 3.1.0.CR1 |

Products: Redhat Resteasy.

## How do I fix CVE-2016-6345?

Upgrade org.jboss.resteasy:resteasy-client to a fixed version for your release line: 3.0.20.Final or 3.1.0.CR1.

## Is CVE-2016-6345 being exploited?

There is no known exploitation of CVE-2016-6345 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-9606](https://insights.sbomify.com/CVE-2016-9606/): JBoss RESTEasy vulnerable to Improper Input Validation (high 8.1)
- [CVE-2018-1051](https://insights.sbomify.com/CVE-2018-1051/): Deserialization of Untrusted Data in org.jboss.resteasy:resteasy-yaml-provider (high 8.1)
- [CVE-2016-6346](https://insights.sbomify.com/CVE-2016-6346/): Denial of service in JBoss resteasy (high 7.5)
- [CVE-2014-7839](https://insights.sbomify.com/CVE-2014-7839/): XML External Entity Reference in RESTEasy (medium 6.4)
- [CVE-2016-6347](https://insights.sbomify.com/CVE-2016-6347/): Improper Neutralization of Input During Web Page Generation in RESTEasy (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-6345 and fix it if it is affected.

What it is: CVE-2016-6345 is a medium-severity vulnerability in n/a, published on 7 Sep 2016. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-6345 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.jboss.resteasy:resteasy-client (Maven): affected all versions; fixed in 3.0.20.Final
- org.jboss.resteasy:resteasy-client (Maven): affected all versions; fixed in 3.0.20.Final
- org.jboss.resteasy:resteasy-client (Maven): affected from 3.1.0.Beta1; fixed in 3.1.0.CR1
- org.jboss.resteasy:resteasy-client (Maven): affected from 3.1.0.Beta1; fixed in 3.1.0.CR1

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-2016-6345/ (Markdown: https://insights.sbomify.com/CVE-2016-6345/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-6345
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-6345
- OSV: https://osv.dev/vulnerability/CVE-2016-6345

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-6345/
Summaries are generated and may contain mistakes; the official description above is the record.