ESB-2018.3898 - [Win] IBM Domino: Increased privileges - Existing account 2018-12-17

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3898
        Privilege Escalation in Notes System Diagnostic Service of
                 both IBM Notes and Domino (CVE-2018-1171)
                             17 December 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Domino
Publisher:         IBM
Operating System:  Windows
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1171  

Reference:         ASB-2018.0176
                   ESB-2018.3272
                   ESB-2018.3028
                   ESB-2018.1782

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10743405

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Security Bulletin: Privilege Escalation in Notes System Diagnostic Service of
both IBM Notes and Domino (CVE-2018-1171)

Security Bulletin

Document information

More support for: IBM Domino

Component: Notes System Diagnostic (NSD)

Software version: Domino 9.0, Domino 9.0.1

Operating system(s): Windows

Reference #: 0743405

Modified date: 14 December 2018

Summary

IBM Notes and Domino (on Windows only) contain a privilege escalation
vulnerability. By crafting a command line sent via the shared memory IPC, the
Notes System Diagnostic (NSD) service can be tricked into executing a malicious
dll chosen by the attacker. IBM addresses this vulnerability in the fix below.

Vulnerability Details

CVEID: CVE-2018-1771

DESCRIPTION: IBM Notes and Domino could allow an attacker to execute commands
on the system by triggering a buffer overflow in the parsing of command line
arguments passed to nsd.exe.
CVSS Base Score: 8.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/148687 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Domino 9.0.1 through 9.0.1 FP10 IF4

IBM Domino 9.0 through 9.0 IF4

IBM Notes 9.0.1 through 9.0.1 FP10 IF5

IBM Notes 9.0 through 9.0 IF4

Please note that IBM Notes and Domino 10 no longer permit running NSD as a
service so are not vulnerable to this attack.

Remediation/Fixes

+-----------------+------------+----------------------------------------------+
|Product          |Version     |Link                                          |
+-----------------+------------+----------------------------------------------+
|IBM Domino       |9.0.1       |Please see this Interim Fix Technote for      |
|                 |FP10IF5     |download links to Domino 901FP10IF5           |
+-----------------+------------+----------------------------------------------+
|IBM Notes        |9.0.1       |Fix Central ID Notes_901FP10IF6_W32_Standard  |
|Standard         |FP10IF6     |                                              |
+-----------------+------------+----------------------------------------------+
|IBM Notes Basic  |9.0.1       |Fix Central ID Notes_901FP10IF6_W32_Basic     |
|                 |FP10IF6     |                                              |
+-----------------+------------+----------------------------------------------+

For earlier releases, IBM recommends upgrading to a fixed, supported release.
However, customers who remain on Notes and Domino 9.0  may open a Service
Request with IBM Support referencing SPR  #EPORB3HQ6K for a custom hotfix.

Note this is fixed in Notes/Domino 10.0.

Workarounds and Mitigations

Do not run NSD as a Windows Service.

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support
alerts like this.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

This vulnerability was reported to IBM by Lasse Trolle Borup of Improsec ApS

Change History

30 Nov 2018: 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.


                      Cross reference information
 Product             Component            Platform   Version    Edition
IBM Notes Notes System Diagnostic Service Windows  All Versions

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