IBM Support

Security Bulletin: Vulnerabilities in GSKit affect IBM WebSphere MQ (CVE-2015-7421, CVE-2015-7420)

Created by Rachel King on
Published URL:
https://www.ibm.com/support/pages/node/279837
279837

Security Bulletin


Summary

Vulnerabilities were discovered in GSKit. IBM WebSphere MQ uses GSKit and addressed the applicable CVE.

Vulnerability Details

CVEID: CVE-2015-7421
DESCRIPTION: A vulnerability in GSKit could allow a remote attacker to obtain sensitive information. The internal ICC PRNG pool state is duplicated during a fork() system call operation which results in a period of time where child processes may generate identical PRNG output to the parent. This may allow possible attacks related to predicable state which an attacker could exploit.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107695 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-7420
DESCRIPTION: A vulnerability in GSKit could allow a remote attacker to obtain sensitive information. The GSKit PRNG state is duplicated during a fork() system call operation which results in a period of time where child processes may generate identical PRNG output to the parent.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107694 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

IBM WebSphere MQ 8.0

Fix Pack 8.0.0.4 and previous maintenance levels

IBM WebSphere MQ 7.5

Fix Pack 7.5.0.5 and previous maintenance levels

IBM WebSphere MQ 7.1

Fix Pack 7.1.0.6 and previous maintenance levels

Remediation/Fixes

IBM WebSphere MQ 8.0

Apply fix pack 8.0.0.5

IBM WebSphere MQ 7.5

Apply fix pack 7.5.0.6

IBM WebSphere MQ 7.1

Apply fix pack 7.1.0.7

For unsupported versions of IBM WebSphere MQ, IBM recommends upgrading to a fixed, supported version of the product.

Workarounds and Mitigations

None known

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support alerts like this.

References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

01 June 2016: 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.

[{"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"SSL","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"8.0;7.5;7.1","Edition":"All Editions","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
15 June 2018

UID

swg21983690

Page Feedback