CVE-2023-2958
📋 TL;DR
CVE-2023-2958 is an authorization bypass vulnerability in Origin Software ATS Pro that allows attackers to bypass authentication mechanisms by manipulating user-controlled keys. This affects all ATS Pro installations before version 20230714, potentially enabling unauthorized access to sensitive systems and data.
💻 Affected Systems
- Origin Software ATS Pro
📦 What is this software?
Ats Pro by Orjinyazilim
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to gain administrative privileges, access sensitive HR data, manipulate recruitment processes, and potentially pivot to other systems.
Likely Case
Unauthorized access to applicant tracking system data including resumes, personal information, interview notes, and internal hiring processes.
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only exposing non-sensitive application data.
🎯 Exploit Status
The CWE-639 classification suggests attackers can manipulate keys/identifiers to bypass authorization checks, typically requiring minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20230714 or later
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-23-0410
Restart Required: Yes
Instructions:
1. Contact Origin Software for the latest patched version (20230714+). 2. Backup current ATS Pro installation and data. 3. Apply the update following vendor instructions. 4. Restart the ATS Pro service. 5. Verify functionality post-update.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to ATS Pro to only authorized internal IP addresses
Web Application Firewall Rules
allImplement WAF rules to block suspicious authentication bypass attempts
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to ATS Pro
- Enable detailed authentication and authorization logging and monitor for suspicious access patterns
🔍 How to Verify
Check if Vulnerable:
Check ATS Pro version in administration panel or configuration files. If version is earlier than 20230714, the system is vulnerable.Check Version:
Check ATS Pro web interface admin panel or consult vendor documentation for version checking method.Verify Fix Applied:
Verify version is 20230714 or later in administration panel and test authentication flows with various user roles.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication patterns
- Access from unexpected user accounts
- Failed authorization attempts followed by successful access
Network Indicators:
- Unusual HTTP requests to authentication endpoints
- Requests with manipulated session or user identifiers
SIEM Query:
source="ats_pro" AND (event_type="auth_bypass" OR (auth_result="success" AND user_role_change="unexpected"))