CVE-2025-1847

6.3 MEDIUM

📋 TL;DR

This CVE describes an improper authorization vulnerability in zj1983 zz software up to version 2024-8. Attackers can exploit this remotely to bypass authorization controls and potentially access unauthorized functionality or data. All users running affected versions are vulnerable.

💻 Affected Systems

Products:
  • zj1983 zz
Versions: Up to and including 2024-8
Operating Systems: Unknown - likely multiple
Default Config Vulnerable: ⚠️ Yes
Notes: Specific affected components are unknown due to limited disclosure details.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise through privilege escalation leading to data theft, system manipulation, or installation of persistent backdoors.

🟠

Likely Case

Unauthorized access to sensitive functionality or data, potentially enabling further lateral movement within the network.

🟢

If Mitigated

Limited impact with proper network segmentation and least privilege access controls in place.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploit details are publicly available in GitHub repositories, making exploitation accessible.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: None available

Restart Required: No

Instructions:

No official patch available. Consider upgrading to any version after 2024-8 if available, or implement workarounds.

🔧 Temporary Workarounds

Network Access Restriction

linux

Restrict network access to affected systems using firewall rules

iptables -A INPUT -p tcp --dport [PORT] -s [TRUSTED_IPS] -j ACCEPT
iptables -A INPUT -p tcp --dport [PORT] -j DROP

Application Layer Filtering

all

Implement WAF rules to detect and block exploitation attempts

🧯 If You Can't Patch

  • Isolate affected systems in a segmented network zone with strict access controls
  • Implement additional authentication and authorization layers before the vulnerable component

🔍 How to Verify

Check if Vulnerable:

Check installed version of zj1983 zz software. If version is 2024-8 or earlier, system is vulnerable.

Check Version:

Check application documentation for version command, typically something like 'zz --version' or check package manager

Verify Fix Applied:

Verify version is newer than 2024-8 or that workaround controls are properly implemented and tested.

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized access attempts
  • Unexpected privilege escalation events
  • Access to restricted endpoints without proper authentication

Network Indicators:

  • Unusual traffic patterns to application ports
  • Requests bypassing authentication endpoints

SIEM Query:

source="application_logs" AND (event_type="auth_failure" OR event_type="unauthorized_access") AND process="zz"

🔗 References

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