TippingPoint Zero Day Initiative

IBM Informix nsrd Service Privilege Escalation Vulnerability

ZDI-16-208: March 22nd, 2016


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows local users to execute arbitrary code on vulnerable installations of IBM Informix. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within configuration of the nsrd service. Weak access control allows all authenticated users to modify the binary for this service and thus execute code in the context of SYSTEM.

Vendor Response

IBM has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2015-12-16 - Vulnerability reported to vendor
    2016-03-22 - Coordinated public release of advisory


This vulnerability was discovered by:
    Steven Seeley of Source Incite