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Security Bulletin: IBM MQ, IBM WebSphere MQ and IBM MQ Appliance Open Source zlib is vulnerable to a denial of service (CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843)

Security Bulletin


Summary

Open Source zlib is vulnerable to a denial of service. By persuading a user to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.

Vulnerability Details

CVEID: CVE-2016-9840
DESCRIPTION:
zlib is vulnerable to a denial of service, caused by out-of-bounds pointer arithmetic in inftrees.c. By persuading a user 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 out-of-bounds pointer arithmetic in inftrees.c. By persuading a user 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 user 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 user 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 WebSphere MQ V7.1

IBM WebSphere MQ 7.1.0.0 - 7.1.0.8 maintenance levels

IBM WebSphere MQ V7.5

IBM WebSphere MQ 7.5.0.0 - 7.5.0.7 maintenance levels

IBM MQ V8

IBM MQ 8.0.0.0 - 8.0.0.6 maintenance levels

IBM MQ Appliance V8

IBM MQ Appliance 8.0.0.0 - 8.0.0.6 maintenance levels

IBM MQ V9 LTS

IBM MQ V9.0.0.0 only


IBM MQ V9 CD
IBM MQ V9.0.1 and V9.0.2
IBM MQ Appliance V9 CD
IBM MQ Appliance V9.0.1 and V9.0.2

Remediation/Fixes

IBM WebSphere MQ V7.1

Apply Fix Pack 7.1.0.9

IBM WebSphere MQ V7.5

Apply Fix Pack 7.5.0.8

IBM MQ V8

Apply Fix Pack 8.0.0.7

IBM MQ Appliance V8

Apply Fix Pack 8.0.0.7 for MQ Appliance

IBM MQ V9 LTS

Apply Fix Pack 9.0.0.1

IBM MQ V9 CD

Upgrade to IBM MQ V9.0.3


IBM MQ Appliance V9 CD
Upgrade to IBM MQ Appliance 9.0.3

Workarounds and Mitigations

All Versions

Disable Channel Compression

Get Notified about Future Security Bulletins

References

Off

Change History

21 November 2017: Added 7.1 fix details
13 July 2017: Added 8.0 & 9.0 fix details
5 July 2017: Added 7.5 fix details
16 June 2017: original version published

*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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
30 August 2019

UID

swg22001520