IBM DB2/DB2 Connect Server up to 10.5.0.11/11.1.4.7/11.5.9/12.1.2 Query stack-based overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in IBM DB2 and DB2 Connect Server up to 10.5.0.11/11.1.4.7/11.5.9/12.1.2. This affects an unknown part of the component Query Handler. This manipulation causes stack-based overflow. This vulnerability is tracked as CVE-2024-51473. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in IBM DB2 and DB2 Connect Server up to 10.5.0.11/11.1.4.7/11.5.9/12.1.2. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Query Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect availability. The summary by CVE is:

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 10.5.0.0 through 10.5.0.11, 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through 12.1.2 is vulnerable to a denial of service as the server may crash under certain conditions with a specially crafted query.

It is possible to read the advisory at ibm.com. This vulnerability is known as CVE-2024-51473 since 10/28/2024. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/23/2026).

The vulnerability scanner Nessus provides a plugin with the ID 243291 (IBM DB2 Multiple DoS Vulnerabilities (7240944, 7240945, 7240953) (Windows)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (243291) and CERT Bund (WID-SEC-2025-1675). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• IBM Tivoli Business Service Manager
• HCL Commerce
• IBM Security Guardium
• IBM DB2

Productinfo

Type

• Database Software

Vendor

• IBM

Name

• DB2
• DB2 Connect Server

Version

• 10.5.0.0
• 10.5.0.1
• 10.5.0.2
• 10.5.0.3
• 10.5.0.4
• 10.5.0.5
• 10.5.0.6
• 10.5.0.7
• 10.5.0.8
• 10.5.0.9
• 10.5.0.10
• 10.5.0.11
• 11.1.4.0
• 11.1.4.1
• 11.1.4.2
• 11.1.4.3
• 11.1.4.4
• 11.1.4.5
• 11.1.4.6
• 11.1.4.7
• 11.5.0
• 11.5.1
• 11.5.2
• 11.5.3
• 11.5.4
• 11.5.5
• 11.5.6
• 11.5.7
• 11.5.8
• 11.5.9
• 12.1.0
• 12.1.1
• 12.1.2

License

• commercial

Website

• Vendor: https://www.ibm.com/

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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