CVE-2025-33082

5.4 MEDIUM

📋 TL;DR

IBM Concert Software versions 1.0.0 through 1.1.0 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious JavaScript into the web interface. This could enable attackers to steal session credentials or manipulate user sessions. Only authenticated users can exploit this vulnerability.

💻 Affected Systems

Products:
  • IBM Concert Software
Versions: 1.0.0 through 1.1.0
Operating Systems: All supported platforms
Default Config Vulnerable: ⚠️ Yes
Notes: All installations within the affected version range are vulnerable by default. Authentication is required for exploitation.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

An attacker could steal administrator credentials, gain full system access, and potentially compromise the entire IBM Concert deployment and connected systems.

🟠

Likely Case

An authenticated malicious insider or compromised account could steal other users' session cookies, leading to unauthorized access to sensitive data within the application.

🟢

If Mitigated

With proper input validation and output encoding, the attack would fail to execute malicious scripts, preventing credential theft.

🌐 Internet-Facing: MEDIUM - While exploitation requires authentication, internet-facing instances could be targeted through compromised accounts or social engineering.
🏢 Internal Only: MEDIUM - Internal users with valid credentials could exploit this to escalate privileges or steal other users' sessions.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires an authenticated user account and knowledge of how to inject JavaScript into vulnerable UI components.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version 1.1.1 or later

Vendor Advisory: https://www.ibm.com/support/pages/node/7243699

Restart Required: No

Instructions:

1. Download IBM Concert Software version 1.1.1 or later from IBM support. 2. Follow IBM's upgrade documentation to apply the patch. 3. Verify the installation completes successfully.

🔧 Temporary Workarounds

Input Validation Enhancement

all

Implement additional input validation on all user-controllable fields to reject or sanitize JavaScript content

Content Security Policy

all

Implement a strict Content Security Policy header to restrict script execution sources

🧯 If You Can't Patch

  • Implement web application firewall (WAF) rules to detect and block XSS payloads
  • Restrict user permissions to minimize attack surface and implement principle of least privilege

🔍 How to Verify

Check if Vulnerable:

Check IBM Concert Software version via administrative interface or configuration files. If version is between 1.0.0 and 1.1.0 inclusive, the system is vulnerable.

Check Version:

Check the application's about page or configuration files for version information specific to IBM Concert deployment.

Verify Fix Applied:

Verify the software version is 1.1.1 or later. Test user input fields to ensure JavaScript injection attempts are properly sanitized.

📡 Detection & Monitoring

Log Indicators:

  • Unusual JavaScript patterns in user input fields
  • Multiple failed login attempts followed by successful authentication

Network Indicators:

  • HTTP requests containing suspicious script tags or JavaScript payloads

SIEM Query:

source="ibm_concert" AND (message="*<script>*" OR message="*javascript:*" OR message="*onload=*" OR message="*onerror=*")

🔗 References

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