Security Bulletin: IBM MQ Appliance is affected by krb5 vulnerabilities (CVE-2018-5730 and CVE-2018-5729)

Security Bulletin

Summary

IBM MQ Appliance has addressed the following krb5 vulnerabilities.

Vulnerability Details

CVEID: CVE-2018-5730
DESCRIPTION: MIT krb5 could allow a remote authenticated attacker to bypass security restrictions, caused by a flaw in the LDAP Kerberos database. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass DN container check.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139970 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)

CVEID: CVE-2018-5729
DESCRIPTION: MIT krb5 is vulnerable to a denial of service, caused by a NULL pointer dereference in the LDAP Kerberos database. By sending specially-crafted data, a remote authenticated attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139969

for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM MQ Appliance 9.1 Long Term Support (LTS) Release
Maintenance level 9.1.0.0 and 9.1.0.1

IBM MQ Appliance 9.1.x Continuous Delivery (CD) Release
Continuous delivery update 9.1.1

Remediation/Fixes

IBM MQ Appliance 9.1 Long Term Support (LTS) Release
Apply iFix IT27359 , or later.

IBM MQ Appliance 9.1.x Continuous Delivery (CD) Release
Apply iFix IT27359 , or later.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

20 Feb 2019 - 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.

Internal Use Only

PSIRT PR: 128540 A: 14095

Document Location

Worldwide

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Tips

Security Bulletin: IBM MQ Appliance is affected by krb5 vulnerabilities (CVE-2018-5730 and CVE-2018-5729)