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CVE-2017-1000353 — Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an…

Key facts

CVE-2017-1000353 is a Critical (9.8) vulnerability: Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2025-10-02), confirming active exploitation in the wild.

Actively exploited — on the CISA KEV catalog

CVE-2017-1000353 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2025-10-02), confirming exploitation in the wild. Federal remediation deadline: 2025-10-23. Prioritise patching and deploy the detection and prevention rules below.
CVE CVE-2017-1000353
Severity Critical (9.8)
CISA KEV Actively exploited (added 2025-10-02)
Detection / prevention —
PoC poc.py
Source 2017/CVE-2017-1000353/

Details

English | 한국어

Description

Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java SignedObject object to the Jenkins CLI, that would be deserialized using a new ObjectInputStream, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding SignedObject to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.

Vulnerability Details

Property Value
CVE ID CVE-2017-1000353
Type RCE
CVSS Score 9.8

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2017/CVE-2017-1000353/poc.py

Usage

# Run PoC against target
python3 poc.py --target <TARGET_URL>

# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>

⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.

Test Lab

This repository includes a Docker-based test environment with both vulnerable and patched applications.

Quick Start

# Clone and navigate to CVE directory
cd CVE-2017-1000353

# Start both applications
docker-compose up -d

# Run tests
./run-tests.sh    # Linux/Mac
./run-tests.ps1   # Windows PowerShell

Application Endpoints

Application URL Status
Vulnerable App http://localhost:8080 Shows vulnerability
Patched App http://localhost:8081 Demonstrates fix

Directory Structure

├── README.md           # English documentation
├── README_KO.md        # Korean documentation
├── poc.py              # PoC detection script
├── docker-compose.yml  # Container orchestration
├── run-tests.sh        # Linux/Mac test runner
├── run-tests.ps1       # Windows test runner
├── vulnerable-app/     # Vulnerable version
│   ├── app.py
│   ├── Dockerfile
│   └── requirements.txt
└── patched-app/        # Fixed version
    ├── app.py
    ├── Dockerfile
    └── requirements.txt

References

  • http://packetstormsecurity.com/files/159266/Jenkins-2.56-CLI-Deserialization-Code-Execution.html
  • http://www.securityfocus.com/bid/98056
  • https://jenkins.io/security/advisory/2017-04-26/
  • https://www.exploit-db.com/exploits/41965/
  • https://www.oracle.com/security-alerts/cpuapr2022.html
  • http://packetstormsecurity.com/files/159266/Jenkins-2.56-CLI-Deserialization-Code-Execution.html
  • http://www.securityfocus.com/bid/98056
  • https://jenkins.io/security/advisory/2017-04-26/
  • https://www.exploit-db.com/exploits/41965/
  • https://www.oracle.com/security-alerts/cpuapr2022.html
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000353

Generated by PoC Generator on 2026-07-03T15:47:28.14666317

Frequently asked questions

What is CVE-2017-1000353?

CVE-2017-1000353 is a Critical (9.8) vulnerability: Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2025-10-02), confirming active exploitation in the wild.

How do I detect CVE-2017-1000353?

Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.

How do I block or mitigate CVE-2017-1000353?

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

Is CVE-2017-1000353 actively exploited?

Yes. CVE-2017-1000353 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2025-10-02, which means it has been exploited in the wild. CISA set a federal remediation deadline of 2025-10-23. Prioritise patching and deploy the detection and prevention rules above.

For authorized security testing and research only. See the full source and NVD record.