# CVE-2020-2247: XXE vulnerability in Jenkins Klocwork Analysis Plugin

> An attacker can exploit XML external entity vulnerabilities in the Jenkins Klocwork Analysis Plugin to read sensitive files or cause denial of service.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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:** 1 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-p6c5-737r-2r93

## What is CVE-2020-2247?

CVE-2020-2247 is a medium-severity vulnerability in Jenkins Klocwork Analysis Plugin, published on 1 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Jenkins Klocwork Analysis Plugin 2020.2.1 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2020-2247?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:klocwork. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.jenkins-ci.plugins:klocwork` | Maven | All versions | 2020.3.1 |
| `org.jenkins-ci.plugins:klocwork` | Maven | All versions | 2020.3.1 |

Products: Jenkins Klocwork Analysis.

## How do I fix CVE-2020-2247?

Upgrade org.jenkins-ci.plugins:klocwork to 2020.3.1 or later.

## Is CVE-2020-2247 being exploited?

There is no known exploitation of CVE-2020-2247 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-2247 and fix it if it is affected.

What it is: CVE-2020-2247 is a medium-severity vulnerability in Jenkins Klocwork Analysis Plugin, published on 1 Sep 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-2020-2247 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.jenkins-ci.plugins:klocwork (Maven): affected all versions; fixed in 2020.3.1
- org.jenkins-ci.plugins:klocwork (Maven): affected all versions; fixed in 2020.3.1

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-2020-2247/ (Markdown: https://insights.sbomify.com/CVE-2020-2247/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-2247
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-2247
- OSV: https://osv.dev/vulnerability/CVE-2020-2247

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-2247/
Summaries are generated and may contain mistakes; the official description above is the record.