CVE-2024-40689 Overview
CVE-2024-40689 is a SQL injection vulnerability affecting IBM InfoSphere Information Server 11.7. A remote, unauthenticated attacker can send specially crafted SQL statements to the application. Successful exploitation allows the attacker to view, add, modify, or delete information stored in the back-end database.
IBM tracks this issue as X-Force ID 297719. The flaw is classified under CWE-89, Improper Neutralization of Special Elements used in an SQL Command. The vulnerability is network-exploitable with no authentication or user interaction required, which expands the population of potential attackers to anyone with network reachability to the server.
Critical Impact
Unauthenticated remote attackers can execute arbitrary SQL against the back-end database, leading to full compromise of data confidentiality, integrity, and availability.
Affected Products
- IBM InfoSphere Information Server 11.7
- IBM InfoSphere Information Server on Cloud 11.7
- Deployments exposing the InfoSphere web interface to untrusted networks
Discovery Timeline
- 2024-07-26 - CVE-2024-40689 published to NVD
- 2024-11-21 - Last updated in NVD database
Technical Details for CVE-2024-40689
Vulnerability Analysis
The vulnerability resides in input handling within IBM InfoSphere Information Server 11.7. The application fails to properly neutralize special characters in user-supplied input before incorporating that input into SQL statements sent to the back-end database. An attacker who controls a vulnerable parameter can break out of the intended query context and append attacker-controlled SQL clauses.
Because exploitation requires no authentication and no user interaction, an attacker only needs network access to the InfoSphere interface. The impact spans all three security properties. Attackers can read sensitive metadata and business data, alter records, drop tables, or render the database unavailable.
The EPSS probability is currently low, but absence of public exploitation does not reduce the underlying risk. InfoSphere Information Server frequently holds high-value enterprise data assets including data governance metadata and ETL pipeline definitions.
Root Cause
The root cause is improper input neutralization [CWE-89]. User-controlled parameters are concatenated into SQL statements rather than passed through parameterized queries or prepared statements. Without strict input validation or bind variables, query syntax can be manipulated by an attacker.
Attack Vector
The attack vector is network-based. An attacker sends crafted HTTP requests carrying malicious SQL fragments to a vulnerable endpoint within InfoSphere Information Server. Typical exploitation techniques include union-based extraction, boolean-based blind injection, time-based blind injection, and stacked queries where the back-end database supports them. Specific endpoint details are documented in the IBM X-Force advisory 297719 and the IBM Support bulletin.
Detection Methods for CVE-2024-40689
Indicators of Compromise
- HTTP requests to InfoSphere endpoints containing SQL meta-characters such as single quotes, UNION SELECT, --, ;, or encoded variants in query parameters or POST bodies.
- Database logs showing unexpected queries originating from the InfoSphere application service account, especially against system catalog tables.
- Application error responses revealing SQL syntax errors or database engine messages returned to clients.
- Sudden growth in result set sizes or anomalous SELECT activity outside normal ETL job schedules.
Detection Strategies
- Deploy web application firewall (WAF) rules tuned to detect SQL injection payload patterns in requests targeting InfoSphere URIs.
- Enable database audit logging and alert on queries that reference system tables (SYSIBM, SYSCAT) from the InfoSphere service account.
- Correlate application access logs with database query logs to identify requests that produce abnormal query patterns.
Monitoring Recommendations
- Centralize InfoSphere application, web server, and database audit logs into a SIEM for cross-source correlation.
- Baseline normal query patterns from the InfoSphere service account and alert on deviations such as INFORMATION_SCHEMA access or large UNION operations.
- Monitor egress traffic from the InfoSphere host for indications of data staging or exfiltration following suspicious query activity.
How to Mitigate CVE-2024-40689
Immediate Actions Required
- Apply the fix referenced in the IBM Support bulletin 7160579 to all InfoSphere Information Server 11.7 instances, including on-cloud deployments.
- Restrict network access to InfoSphere interfaces to trusted administrative networks until patching is complete.
- Review database audit logs covering the period since deployment for anomalous queries originating from the InfoSphere service account.
- Rotate database credentials used by InfoSphere after patching to invalidate any previously captured secrets.
Patch Information
IBM has published remediation guidance and fix availability through the IBM Support page for CVE-2024-40689. Administrators should consult that bulletin for exact fix pack versions applicable to their InfoSphere Information Server 11.7 environment. Additional vulnerability metadata is available in IBM X-Force entry 297719.
Workarounds
- Place a WAF in front of InfoSphere with SQL injection signatures enabled and tuned to the application's request patterns.
- Limit database account privileges used by InfoSphere to the minimum required, reducing the blast radius if injection succeeds.
- Disable or block external access to the affected interfaces if the patch cannot be applied immediately.
# Example: restrict InfoSphere access to a management subnet using iptables
iptables -A INPUT -p tcp --dport 9443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 9443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
