Skip to content

CVE-2013-0422 — Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to…

Key facts

CVE-2013-0422 is a Critical (9.8) vulnerability: Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2022-05-25), confirming active exploitation in the wild, and is linked to known ransomware campaigns.

Actively exploited — on the CISA KEV catalog

CVE-2013-0422 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2022-05-25), confirming exploitation in the wild. It is linked to known ransomware campaigns. Federal remediation deadline: 2022-06-15. Prioritise patching and deploy the detection and prevention rules below.
CVE CVE-2013-0422
Severity Critical (9.8)
CISA KEV Actively exploited (added 2022-05-25) · ransomware
Detection / prevention —
PoC poc.py
Source 2013/CVE-2013-0422/

Details

English | 한국어

Description

Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class references using the findClass method, and (2) using the Reflection API with recursion in a way that bypasses a security check by the java.lang.invoke.MethodHandles.Lookup.checkSecurityManager method due to the inability of the sun.reflect.Reflection.getCallerClass method to skip frames related to the new reflection API, as exploited in the wild in January 2013, as demonstrated by Blackhole and Nuclear Pack, and a different vulnerability than CVE-2012-4681 and CVE-2012-3174. NOTE: some parties have mapped the recursive Reflection API issue to CVE-2012-3174, but CVE-2012-3174 is for a different vulnerability whose details are not public as of 20130114. CVE-2013-0422 covers both the JMX/MBean and Reflection API issues. NOTE: it was originally reported that Java 6 was also vulnerable, but the reporter has retracted this claim, stating that Java 6 is not exploitable because the relevant code is called in a way that does not bypass security checks. NOTE: as of 20130114, a reliable third party has claimed that the findClass/MBeanInstantiator vector was not fixed in Oracle Java 7 Update 11. If there is still a vulnerable condition, then a separate CVE identifier might be created for the unfixed issue.

Vulnerability Details

Property Value
CVE ID CVE-2013-0422
CVSS Score 9.8

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2013/CVE-2013-0422/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-2013-0422

# 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://blog.fireeye.com/research/2013/01/happy-new-year-from-new-java-zero-day.html
  • http://blog.fuseyism.com/index.php/2013/01/15/security-icedtea-2-1-4-2-2-4-2-3-4-released/
  • http://immunityproducts.blogspot.ca/2013/01/confirmed-java-only-fixed-one-of-two.html
  • http://krebsonsecurity.com/2013/01/zero-day-java-exploit-debuts-in-crimeware/
  • http://labs.alienvault.com/labs/index.php/2013/new-year-new-java-zeroday/
  • http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00025.html
  • http://malware.dontneedcoffee.com/2013/01/0-day-17u10-spotted-in-while-disable.html
  • http://rhn.redhat.com/errata/RHSA-2013-0156.html
  • http://rhn.redhat.com/errata/RHSA-2013-0165.html
  • http://seclists.org/bugtraq/2013/Jan/48
  • http://www.kb.cert.org/vuls/id/625617
  • http://www.mandriva.com/security/advisories?name=MDVSA-2013:095
  • http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.html
  • http://www.ubuntu.com/usn/USN-1693-1
  • http://www.us-cert.gov/cas/techalerts/TA13-010A.html
  • https://partners.immunityinc.com/idocs/Java%20MBeanInstantiator.findClass%200day%20Analysis.pdf
  • https://threatpost.com/en_us/blogs/nasty-new-java-zero-day-found-exploit-kits-already-have-it-011013
  • https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0018
  • https://www-304.ibm.com/connections/blogs/PSIRT/entry/oracle_java_7_security_manager_bypass_vulnerability_cve_2013_04224?lang=en_us
  • http://blog.fireeye.com/research/2013/01/happy-new-year-from-new-java-zero-day.html
  • http://blog.fuseyism.com/index.php/2013/01/15/security-icedtea-2-1-4-2-2-4-2-3-4-released/
  • http://immunityproducts.blogspot.ca/2013/01/confirmed-java-only-fixed-one-of-two.html
  • http://krebsonsecurity.com/2013/01/zero-day-java-exploit-debuts-in-crimeware/
  • http://labs.alienvault.com/labs/index.php/2013/new-year-new-java-zeroday/
  • http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00025.html
  • http://malware.dontneedcoffee.com/2013/01/0-day-17u10-spotted-in-while-disable.html
  • http://rhn.redhat.com/errata/RHSA-2013-0156.html
  • http://rhn.redhat.com/errata/RHSA-2013-0165.html
  • http://seclists.org/bugtraq/2013/Jan/48
  • http://www.kb.cert.org/vuls/id/625617
  • http://www.mandriva.com/security/advisories?name=MDVSA-2013:095
  • http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.html
  • http://www.ubuntu.com/usn/USN-1693-1
  • http://www.us-cert.gov/cas/techalerts/TA13-010A.html
  • https://partners.immunityinc.com/idocs/Java%20MBeanInstantiator.findClass%200day%20Analysis.pdf
  • https://threatpost.com/en_us/blogs/nasty-new-java-zero-day-found-exploit-kits-already-have-it-011013
  • https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0018
  • https://www-304.ibm.com/connections/blogs/PSIRT/entry/oracle_java_7_security_manager_bypass_vulnerability_cve_2013_04224?lang=en_us
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-0422

Generated by PoC Generator on 2026-07-05T05:21:34.012360977

Frequently asked questions

What is CVE-2013-0422?

CVE-2013-0422 is a Critical (9.8) vulnerability: Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2022-05-25), confirming active exploitation in the wild, and is linked to known ransomware campaigns.

How do I detect CVE-2013-0422?

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-2013-0422?

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-2013-0422 actively exploited?

Yes. CVE-2013-0422 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2022-05-25, which means it has been exploited in the wild. CISA also links it to known ransomware campaigns. CISA set a federal remediation deadline of 2022-06-15. Prioritise patching and deploy the detection and prevention rules above.

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