# CVE-2018-2657: Denial of service in Java

> An unauthenticated attacker can cause a partial denial of service in Java SE and JRockit by supplying data to serialization APIs.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Jan 2018
- **Updated:** 3 Oct 2024
- **Also known as:** GHSA-qq7j-frwj-qh26

## What is CVE-2018-2657?

CVE-2018-2657 is a medium-severity denial of service vulnerability in Hp Xp7 Command View, published on 18 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vulnerability in the Java SE, JRockit component of Oracle Java SE (subcomponent: Serialization). Supported versions that are affected are Java SE: 6u171 and 7u161; JRockit: R28.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, JRockit. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, JRockit. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

## Which versions are affected by CVE-2018-2657?

It affects 12 products.


Products: Hp Xp7 Command View, Hp Xp Command View, Hp Xp P9000 Command View, Oracle Jdk, Oracle Jre, Oracle Jrockit, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Workstation, Redhat Satellite, Schneider-Electric Struxureware Data Center Expert.

## How do I fix CVE-2018-2657?

Apply the vendor's patch.

## Is CVE-2018-2657 being exploited?

There is no known exploitation of CVE-2018-2657 in the wild and no public exploit code.

## Other vulnerabilities in Hp Xp7 Command View

- [CVE-2016-4378](https://insights.sbomify.com/CVE-2016-4378/): Information disclosure in n/a (high 7.5)
- [CVE-2018-2973](https://insights.sbomify.com/CVE-2018-2973/): Other in Java (medium 5.9)
- [CVE-2016-4381](https://insights.sbomify.com/CVE-2016-4381/): Auth bypass in n/a (medium 4.5)
- [CVE-2018-2940](https://insights.sbomify.com/CVE-2018-2940/): Information disclosure in Java (medium 4.3)
- [CVE-2019-2426](https://insights.sbomify.com/CVE-2019-2426/): Information disclosure in Java (low 3.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-2657 and fix it if it is affected.

What it is: CVE-2018-2657 is a medium-severity denial of service vulnerability in Hp Xp7 Command View, published on 18 Jan 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-2018-2657 in the wild and no public exploit code.

Affected product: Hp Xp7 Command View. 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-2018-2657/ (Markdown: https://insights.sbomify.com/CVE-2018-2657/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-2657
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-2657
- OSV: https://osv.dev/vulnerability/CVE-2018-2657

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-2657/
Summaries are generated and may contain mistakes; the official description above is the record.