Security Bulletin: IBM MQ and WebSphere MQ are affected by multiple vulnerabilities in OpenSSL and GSKit.

Summary

IBM MQ and WebSphere MQ have addressed multiple vulnerabilities in OpenSSL and GSKit.

OpenSSL is used by IBM MQ Advanced Message Security on the IBM i platform only.

Vulnerability Details

CVEID: CVE-2016-0705**
DESCRIPTION:** OpenSSL is vulnerable to a denial of service, caused by a double-free error when parsing DSA private keys. An attacker could exploit this vulnerability to corrupt memory and cause a denial of service.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111140 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2017-3732**
DESCRIPTION:** OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagating bug in the x86_64 Montgomery squaring procedure. An attacker could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/121313 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2017-3736**
DESCRIPTION:** OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagation flaw in the x86_64 Montgomery squaring function bn_sqrx8x_internal(). An attacker with online access to an unpatched system could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134397 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2018-1428**
DESCRIPTION:** IBM GSKit uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139073 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:N/A:N)

CVEID: CVE-2018-1427**
DESCRIPTION:** IBM GSKit contains several enviornment variables that a local attacker could overflow and cause a denial of service.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139072 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2018-1426**
DESCRIPTION:** IBM GSKit duplicates the PRNG state across fork() system calls when multiple ICC instances are loaded which could result in duplicate Session IDs and a risk of duplicate key material.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139071 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

CVEID: CVE-2018-1447**
DESCRIPTION:** The GSKit CMS KDB logic fails to salt the hash function resulting in weaker than expected protection of passwords. A weak password may be recovered. Note: After update the customer should change password to ensure the new password is stored more securely. Products should encourage customers to take this step as a high priority action.
CVSS Base Score: 5.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139972 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

WebSphere MQ v7.0.1

• Maintenance levels: 7.0.1.0 - 7.0.1.14

WebSphere MQ v7.1

• Maintenance levels: 7.1.0.0 - 7.1.0.9

WebSphere MQ v7.5

• Maintenance levels: 7.5.0.0 - 7.5.0.8

IBM MQ v8.0 and IBM MQ Appliance v8.0

• Maintenance level: 8.0.0.0 - 8.0.0.8

IBM MQ v9.0 LTS

• Maintenance levels: 9.0.0.0 - 9.0.0.2

IBM MQ v9.0.x CD and IBM MQ Appliance v9.0.x CD

• IBM MQ version 9.0.1 - 9.0.4

Remediation/Fixes

WebSphere MQ v7.0.1

• Contact WebSphere MQ Support requesting an iFix for APAR IT25200

WebSphere MQ v7.1

• Contact WebSphere MQ Support requesting an iFix for APAR IT25200

WebSphere MQ v7.5

• Apply iFix IT25200

IBM MQ v8.0 and IBM MQ Appliance v8.0

• Apply fixpack 8.0.0.9

IBM MQ v9.0 LTS

• Apply fixpack 9.0.0.3

IBM MQ v9.0.x CD and IBM MQ Appliance v9.0.x CD

• Upgrade to IBM MQ 9.0.5

Workarounds and Mitigations

None