CVE-2025-13108 Overview
IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 contains a memory information disclosure vulnerability that could allow an attacker to access sensitive information. The vulnerability exists due to improper buffer clearing, where resources are not properly sanitized from memory after use. This can lead to exposure of potentially sensitive data that remains in memory buffers.
Critical Impact
Local attackers with low privileges can exploit improper memory buffer handling to read sensitive information that persists in memory, potentially exposing credentials, configuration data, or other confidential information processed by DB2 Merge Backup.
Affected Products
- IBM DB2 Merge Backup for Linux 12.1.0.0
- IBM DB2 Merge Backup for UNIX 12.1.0.0
- IBM DB2 Merge Backup for Windows 12.1.0.0
Discovery Timeline
- 2026-02-17 - CVE CVE-2025-13108 published to NVD
- 2026-02-18 - Last updated in NVD database
Technical Details for CVE-2025-13108
Vulnerability Analysis
This vulnerability is classified as a Memory Information Disclosure issue affecting IBM DB2 Merge Backup version 12.1.0.0 across Linux, UNIX, and Windows platforms. The flaw stems from inadequate memory management practices where sensitive data stored in buffers is not properly cleared after operations complete.
When DB2 Merge Backup processes backup operations, it handles various types of sensitive information including database credentials, connection strings, and backup metadata. Due to the improper buffer clearing, this information may persist in memory longer than intended. An attacker with local access and low-level privileges could potentially read these memory regions to extract sensitive information.
The vulnerability requires local access to the affected system, meaning remote exploitation is not directly possible. However, the high confidentiality impact indicates that successful exploitation could lead to significant information exposure. There is no impact on system integrity or availability, as this is purely an information disclosure issue.
Root Cause
The root cause of CVE-2025-13108 is improper resource cleanup in memory management routines. Specifically, the buffer handling code fails to securely clear or zero out memory contents after sensitive data has been processed. This violates secure coding best practices that mandate explicit clearing of buffers containing sensitive information before they are deallocated or reused.
This type of vulnerability often occurs when developers rely on memory deallocation functions alone to handle cleanup, without explicitly overwriting sensitive data. Memory deallocation marks memory as available for reuse but does not actually clear the contents, leaving sensitive data readable until the memory is overwritten by subsequent operations.
Attack Vector
The attack vector for this vulnerability is local, requiring an attacker to have authenticated access to the system running IBM DB2 Merge Backup. The exploitation scenario involves:
- An attacker gains local access to a system with DB2 Merge Backup 12.1.0.0 installed
- The attacker monitors or dumps memory regions associated with the DB2 Merge Backup process
- Due to improper buffer clearing, sensitive information from previous operations remains accessible
- The attacker extracts credentials, database connection details, or other sensitive configuration data
The low attack complexity and lack of required user interaction make this vulnerability relatively straightforward to exploit once an attacker has local system access. Tools for memory analysis and process inspection on Linux, UNIX, and Windows platforms are readily available and could facilitate exploitation.
Detection Methods for CVE-2025-13108
Indicators of Compromise
- Unusual process memory access patterns targeting IBM DB2 Merge Backup processes
- Unexpected memory dump files or core dumps in system directories
- Anomalous use of debugging tools or memory inspection utilities by non-administrative users
- Evidence of credential harvesting or unauthorized database access following backup operations
Detection Strategies
- Monitor for process memory access attempts using tools like ptrace, ReadProcessMemory, or /proc/[pid]/mem targeting DB2 Merge Backup
- Implement endpoint detection rules for memory dumping tools and techniques
- Enable comprehensive audit logging for IBM DB2 Merge Backup operations
- Deploy behavioral analysis to detect anomalous access patterns to backup-related processes
Monitoring Recommendations
- Configure system audit policies to log memory access operations on sensitive processes
- Implement file integrity monitoring on IBM DB2 Merge Backup installation directories
- Review authentication logs for unusual local access patterns
- Monitor for privilege escalation attempts that could precede exploitation
How to Mitigate CVE-2025-13108
Immediate Actions Required
- Review the IBM Support Page for official guidance and patches
- Restrict local system access to trusted administrators only
- Audit user accounts with access to systems running IBM DB2 Merge Backup 12.1.0.0
- Implement additional monitoring on affected systems until patching is complete
Patch Information
IBM has published information regarding this vulnerability. System administrators should consult the IBM Support Page for the latest patch information and remediation guidance specific to their environment and platform.
Organizations should prioritize patching based on the sensitivity of data processed by IBM DB2 Merge Backup and the exposure of affected systems to potentially malicious local users.
Workarounds
- Limit local access to systems running IBM DB2 Merge Backup to only essential personnel
- Implement strict access controls and monitoring on backup infrastructure
- Consider isolating backup systems from general-purpose workstations where possible
- Enable enhanced process monitoring to detect memory inspection attempts
# Example: Restrict access to DB2 Merge Backup directories (Linux/UNIX)
chmod 750 /opt/ibm/db2mergebackup
chown -R root:db2admin /opt/ibm/db2mergebackup
# Enable audit logging for process access
auditctl -a always,exit -F arch=b64 -S ptrace -k memory_access_monitoring
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
