Executive Summary

Title IBM Director fails to properly time-out connection requests from clients
Name VU#512193 First vendor Publication 2007-11-20
Vendor VU-CERT Last vendor Modification 2007-11-20
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Vulnerability Note VU#512193

IBM Director fails to properly time-out connection requests from clients


IBM Director Systems, specifically CIM Server, contains a denial-of-service vulnerability that can allow a remote, unauthenticated attacker to render Director inoperative.

I. Description

IBM Director is a suite of system management tools.

When a rogue connection request is made to IBM Director Systems, specifically the CIM Server, a thread is created that listens on a port, waiting for a specific response from the client. If the client does not send the expected response, the thread remains in memory listening, indicating a high CPU utilization until the client connects to it. If multiple rogue clients connect simultaneously, the finite number of connections can be exhausted causing server to crash.

Versions 5.20.1 and earlier for Windows and Linux are affected.

II. Impact

IBM Director Systems will become inaccessible for management.

III. Solution

Apply an update

Download and Apply the patch for Windows and Linux systems here:

Block or restrict access

Employ other protection mechanisms that will restrict access to the Director Systems by installing firewalls, defining filters, or by using reverse proxies.

Systems Affected

VendorStatusDate Updated
IBM eServerVulnerable20-Nov-2007




Thanks to IBM for reporting this vulnerability, who in turn credit Juniper Networks.

This document was written by Will Dormann.

Other Information

Date Public11/20/2007
Date First Published11/20/2007 04:16:14 PM
Date Last Updated11/20/2007
CERT Advisory 
CVE NameCVE-2007-5612
Document Revision5

Original Source

Url : http://www.kb.cert.org/vuls/id/512193

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-399 Resource Management Errors

CPE : Common Platform Enumeration

Application 16

Open Source Vulnerability Database (OSVDB)

Id Description
39269 IBM Director CIM Server Multiple Idle Connections Remote DoS

IBM Director CIM Server contains a flaw that may allow a remote denial of service. The issue is triggered when a large number of idle connections occurs, and will result in loss of availability for the service.