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Security Bulletin: Informix HQ is vulnerable to HTML injection and does not lock out users after multiple incorrect password attempts.

Security Bulletin


Summary

The Informix HQ "alerting configuration" feature is vulnerable to HTML injection because it accepts HTML scripts in the script Location field and only affects their own session, not any other user sessions. Additionally, the Informix HQ application does not enforce a lockout policy, even after multiple incorrect password attempts.

Vulnerability Details

CVEID:   CVE-2024-49342
DESCRIPTION:   IBM Informix Dynamic Server uses an inadequate account lockout setting that could allow a remote attacker to brute force account credentials.
CWE:   CWE-307: Improper Restriction of Excessive Authentication Attempts
CVSS Source:   IBM
CVSS Base score:   7.5
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID:   CVE-2024-49343
DESCRIPTION:   IBM Informix Dynamic Server is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
CWE:   CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CVSS Source:   IBM
CVSS Base score:   5.4
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Informix Dynamic Server14.10
IBM Informix Dynamic Server12.10.x
IBM Informix Dynamic Server14.10
IBM Informix Dynamic Server12.10.x

Remediation/Fixes

A permanent fix for the vulnerability has been released in IBM Informix HQ, included with versions 12.10.xC16W2, 14.10.xC11W1, and also addressed in IBM Informix HQ version 3.0.0.

Fixes are available on IBM Fix Central - Select Fixes - Informix Server. Download the latest fix for your product and version to pick up the security patches.

Follow the instructions for Database server upgrades in the Informix Servers documentation.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

28 Jul 2025: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
28 July 2025

UID

ibm17240777