HIGH CVSS 7.6
Published: 2025-12-17

CVE-2025-66029

osc open_ondemand Security Advisory (CVE-2025-66029)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-66029 impacting osc open_ondemand. Evaluated with CVSS Base Score of 7.6 (HIGH).

Original NVD Description

Source: NIST NVD
Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to origin servers. This means malicious users can create an origin server on a compute node that record these headers when unsuspecting users connect to it. Maintainers anticipate a patch in a 4.1 release. Workarounds exist for 4.0.x versions. Using `custom_location_directives` in `ood_portal.yml` in version 4.0.x (not available for versions below 4.0) centers can unset and or edit these headers. Note that `OIDCPassClaimsAs both` is the default and centers can set `OIDCPassClaimsAs ` to `none` or `environment` to stop passing these headers to the client. Centers that have an OIDC provider with the `OIDCPassClaimsAs` with `none` or `environment` settings can adjust the settings using guidance provided in GHSA-2cwp-8g29-9q32 to unset the mod_auth_openidc_session cookies.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
Required (UI:R)
User must click or open resource
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
High (C:H)
Total information disclosure
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product osc / open_ondemand
Affected Versions *
Weakness Enumeration CWE-522

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2025-66029 impacting osc open_ondemand.

⚡ Nuclei Detection Template (YAML) cve-2025-66029.yaml
id: cve-2025-66029

info:
  name: osc open_ondemand - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2025-66029 affecting osc open_ondemand.
    Evaluation: Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to ori...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-66029
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
    cvss-score: 7.6
    cve-id: CVE-2025-66029
    cwe-id: CWE-522
  tags: cve,cve-2025-66029,osc,open_ondemand,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "open_ondemand"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-66029.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-66029
# Target: osc open_ondemand | CVSS: 7.6 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-66029 (osc open_ondemand)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against osc open_ondemand scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2025-66029.sh
# Recommended Remediation & Patching Commands for CVE-2025-66029
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install open_ondemand 2>/dev/null || \
sudo dnf upgrade open_ondemand 2>/dev/null || \
sudo yum update open_ondemand

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i open_ondemand 2>/dev/null || rpm -qa | grep -i open_ondemand

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-66029 in osc open_ondemand?

Review vendor-specific security notices and update osc open_ondemand packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2025-66029?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2025-66029?

CVE-2025-66029 is classified with a CVSS 3.1 Base Score of 7.6 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.6
HIGH SEVERITY
CVE ID CVE-2025-66029
Weakness CWE-522
Vendor osc
Product open_ondemand
Published 2025-12-17
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N