ESB-2017.2182 - [Win][Linux][OSX] IBM Notes: Denial of service - Remote with user interaction 2017-09-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2182
       Security Bulletin: IBM Notes is affected by Open Source zlib
                              vulnerabilities
                             1 September 2017

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

Product:           IBM Notes
Publisher:         IBM
Operating System:  Linux variants
                   OS X
                   Windows
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-9843 CVE-2016-9842 CVE-2016-9841
                   CVE-2016-9840  

Reference:         ESB-2017.2078
                   ESB-2017.2021
                   ESB-2017.2020

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21997877

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Security Bulletin: IBM Notes is affected by Open Source zlib vulnerabilities

Security Bulletin

Document information

More support for: IBM Notes

Security

Software version: 8.5.1.5, 8.5.2.4, 8.5.3.6, 9.0, 9.0.1.8

Operating system(s): Linux, OS X, Windows

Reference #: 1997877

Modified date: 31 August 2017

Summary

Open Source zlib library is vulnerable to multiple denial of service 
vulnerabilities. IBM Notes uses Open Source zlib library. IBM Notes has 
addressed these vulnerabilities.

Vulnerability Details

CVEID: CVE-2016-9840

DESCRIPTION: zlib is vulnerable to a denial of service, caused by an 
out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open
a specially crafted document, a remote attacker could exploit this 
vulnerability to cause a denial of service.

CVSS Base Score: 3.3

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/120508 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9841

DESCRIPTION: zlib is vulnerable to a denial of service, caused by an 
out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open
a specially crafted document, a remote attacker could exploit this 
vulnerability to cause a denial of service.

CVSS Base Score: 3.3

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/120509 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9842

DESCRIPTION: zlib is vulnerable to a denial of service, caused by an undefined
left shift of negative number. By persuading a victim to open a specially 
crafted document, a remote attacker could exploit this vulnerability to cause
a denial of service.

CVSS Base Score: 3.3

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/120510 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9843

DESCRIPTION: zlib is vulnerable to a denial of service, caused by a big-endian
out-of-bounds pointer. By persuading a victim to open a specially crafted 
document, a remote attacker could exploit this vulnerability to cause a denial
of service.

CVSS Base Score: 3.3

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/120511 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM Notes 9.0.1 to 9.0.1 FP8IF1.

IBM Notes 9.0 to 9.0 IF4.

IBM Notes 8.5.3 to 8.5.3 FP6 IF13

IBM Notes 8.5.2 to 8.5.2 FP4 IF3

IBM Notes 8.5.1 to 8.5.1 FP5 IF3

IBM Notes 8.5 release

Remediation/Fixes

Product 		Version 		Link

IBM Notes 		9.0.1 FP9 		https://www.ibm.com/support/docview.wss?uid=swg24037141

IBM Notes 		8.5.3 FP6 IF15 		http://www.ibm.com/support/docview.wss?uid=swg21663874

IBM Notes 64-bit Mac 	901 64-bit Mac IF11 	http://www.ibm.com/support/docview.wss?uid=swg21657963

Customers who remain on the following releases may open a Service Request with
IBM Support and reference SPR# PPUEAHRDF7.

IBM Notes 9.0.1 to 9.0.1 FP8 IF1.

IBM Notes 9.0 to 9.0 IF4.

IBM Notes 8.5.2 to 8.5.2 FP4 IF3

IBM Notes 8.5.1 to 8.5.1 FP5 IF3

IBM Notes 8.5 release

References

Complete CVSS v3 Guide

On-line Calculator v3

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Change History

31 August 2017: Original 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.

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