CVE-2025-36150: IBM Concert Information Disclosure Flaw

CVE-2025-36150 Overview

IBM Concert versions 1.0.0 through 2.0.0 contain a cryptographic vulnerability that uses weaker than expected cryptographic algorithms. This weakness could allow an attacker to decrypt highly sensitive information, potentially exposing confidential data processed or stored by the application.

Critical Impact

Attackers exploiting this vulnerability could decrypt sensitive information due to weak cryptographic implementations, leading to unauthorized data exposure across network-accessible IBM Concert deployments.

Affected Products

• IBM Concert 1.0.0
• IBM Concert versions between 1.0.0 and 2.0.0
• IBM Concert 2.0.0

Discovery Timeline

• 2025-11-24 - CVE CVE-2025-36150 published to NVD
• 2025-12-01 - Last updated in NVD database

Technical Details for CVE-2025-36150

Vulnerability Analysis

This vulnerability falls under CWE-327 (Use of a Broken or Risky Cryptographic Algorithm). IBM Concert implements cryptographic algorithms that do not meet current security standards for protecting sensitive information. The weakness allows network-based attackers to potentially intercept and decrypt protected data without requiring authentication or user interaction.

The vulnerability is particularly concerning because it affects the confidentiality of data. An attacker with network access to an affected IBM Concert instance could exploit the weak cryptographic implementation to recover plaintext from encrypted data. The attack requires no special privileges and can be conducted without any user interaction, making it a passive attack vector that may be difficult to detect.

Root Cause

The root cause of CVE-2025-36150 is the implementation of outdated or insufficiently strong cryptographic algorithms within IBM Concert. This may include the use of deprecated cipher suites, inadequate key lengths, or weak hashing algorithms that modern computing resources can break through brute force or cryptanalytic attacks.

Organizations relying on IBM Concert for processing sensitive information should treat this as a high-priority concern, as the confidentiality of encrypted data cannot be assured while using affected versions.

Attack Vector

The attack vector for this vulnerability is network-based. An attacker positioned on the network path between clients and the IBM Concert server, or with access to stored encrypted data, could leverage cryptanalytic techniques against the weak cryptographic algorithms to recover sensitive information.

The exploitation scenario involves:

1. Intercepting encrypted communications or accessing encrypted stored data
2. Applying cryptanalytic attacks against the weak algorithm implementation
3. Recovering plaintext sensitive information from the decrypted data

Due to the cryptographic nature of this vulnerability, exploitation does not require direct interaction with the application but rather analysis of the encrypted data streams or storage.

Detection Methods for CVE-2025-36150

Indicators of Compromise

• Unusual network traffic patterns involving encrypted data extraction from IBM Concert instances
• Evidence of cryptanalytic attacks in network logs or security monitoring systems
• Unexpected access to sensitive data that should have been protected by encryption
• Authentication or authorization anomalies following potential data exposure

Detection Strategies

• Monitor network traffic to and from IBM Concert servers for abnormal patterns or suspicious data extraction attempts
• Implement deep packet inspection to identify potential man-in-the-middle attack indicators
• Deploy intrusion detection systems with rules targeting cryptographic attack signatures
• Audit access logs for IBM Concert to identify unauthorized data access patterns

Monitoring Recommendations

• Enable comprehensive logging for all IBM Concert instances and centralize log collection
• Implement network security monitoring for encrypted traffic anomalies
• Configure alerting for any identified weak cryptographic algorithm usage in security scanning tools
• Regularly review security configurations and cryptographic settings in IBM Concert deployments

How to Mitigate CVE-2025-36150

Immediate Actions Required

• Identify all IBM Concert deployments running versions 1.0.0 through 2.0.0 in your environment
• Review the IBM Security Advisory for specific patch and remediation guidance
• Prioritize patching for instances handling highly sensitive or regulated data
• Consider network segmentation to limit exposure of vulnerable IBM Concert instances until patching is complete

Patch Information

IBM has released a security advisory addressing this vulnerability. Organizations should consult the IBM Support Page for detailed patch information, including specific version updates that remediate the weak cryptographic algorithm implementation. Apply the vendor-recommended patches as soon as possible to ensure cryptographic protections meet current security standards.

Workarounds

• Implement network-level encryption (such as TLS 1.3) for all communications with IBM Concert as an additional layer of protection
• Restrict network access to IBM Concert instances to trusted networks and authorized users only
• Consider deploying a web application firewall (WAF) or reverse proxy with strong cryptographic configurations in front of affected instances
• Monitor the IBM security advisory for any interim mitigation guidance while awaiting full patch deployment

# Example: Verify IBM Concert version
# Check your installed version against affected range (1.0.0 - 2.0.0)
# Consult IBM documentation for version verification commands specific to your deployment

# Network hardening example - restrict access to Concert instances
# iptables -A INPUT -p tcp --dport <concert_port> -s <trusted_network> -j ACCEPT
# iptables -A INPUT -p tcp --dport <concert_port> -j DROP