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Security Bulletin: IBM MQ is affected by a vulnerability in json-c (CVE-2020-12762)

Security Bulletin


Summary

An applicable vulnerability was found in the json-c library that is bundled with MQ server and native client installations.

Vulnerability Details

CVEID:   CVE-2020-12762
DESCRIPTION:   json-c could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow and out-of-bounds write. By persuading a victim to run a specially crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/182094 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s) Version(s)
IBM MQ 9.1 LTS
IBM MQ 9.2 CD
IBM MQ 9.2 LTS

Remediation/Fixes

IBM MQ version 9.1 LTS

Apply iFix for APAR IT33880

IBM MQ version 9.2 LTS

Apply Fixpack 9.2.0.1

IBM MQ version 9.2 CD

Upgrade to IBM MQ 9.2.1

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

16 December 2020: 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.

Document Location

Worldwide

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Document Information

Modified date:
18 December 2020

UID

ibm16382922