Security Bulletin: IBM Tivoli Directory Server paged search may cause denial of service may crash if paged searches are enabled (CVE-2012-0743)

Flash (Alert)


Abstract

A custom LDAP client can be created which would cause IBM Tivoli Directory Server to crash by sending a malformed paged search request. This can cause a denial of service.

Content

VULNERABILITY DETAILS:
CVE ID: CVE-2012-0743

DESCRIPTION: A custom LDAP client can be created which would cause IBM Tivoli Directory Server to crash by sending a malformed paged search request. It is not believed that this vulnerability could be exploited to execute arbitrary code, gain unauthorized access or corrupt data, but it can cause denial of service.

CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/74663 for the current score
CVSS Environmental Score*: Undefined
CVSS String: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

AFFECTED PLATFORMS: Version 6.3 and earlier

REMEDIATION:

Vendor Fix(es):


Affected Version
APAR
Fix
6.1
IO15707
6.1.0.47-ISS-ITDS-IF0047
6.2
IO16001
6.2.0.22-ISS-ITDS-IF0022
6.3
IO16002
6.3.0.11-ISS-ITDS-IF0011

For TDS versions not listed here contact IBM Technical Support

If assistance is required to determine the version, release of TDS installed, see the following url for information
https://www-304.ibm.com/support/docview.wss?rs=767&uid=swg21267300


Workaround(s):

· Paged searches can be disabled by configuring ibm-slapdPagedResLmt = 0.

· Paged searches can be restricted to administrators only by configuring ibm-slapdPagedResAllowNonAdmin = FALSE.

Mitigation(s):

· All searches (including paged searches) can be restricted to authenticated users only by configuring ibm-slapdAllowAnon = FALSE. This would prevent anonymous users from being able to connect to the server, but authenticated users could still potentially crash the server if paged searches are enabled.

REFERENCES:
· Complete CVSS Guide
· On-line Calculator V2
· X-Force Database
· CVE-2012-0743

RELATED INFORMATION:
· IBM Product Security Incident Response Program
· IBM Tivoli Directory Server Support

Created/Revised by Date of Creation/Update Summary of Changes
brookh 2012/04/16 created
brookh 2012/04/17 Add CVSS disclaimer
brookh 2014/04/25 Redirect broken DCF links to fix central

*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 Flash.


Note: 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.

Historical Number

XX04418

Product Alias/Synonym

LDAP TDS ITDS IDS

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Document information


More support for:

IBM Security Directory Server
General

Software version:

6.1, 6.2, 6.3

Operating system(s):

All Platforms

Software edition:

All Editions

Reference #:

1591267

Modified date:

2014-04-25

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