Security Bulletin
Summary
There is a vulnerability in IBM® SDK Java™ Technology Edition that is used by IBM Explorer for z/OS V3.0. This vulnerability, commonly referred to as “SLOTH”, was disclosed as part of the IBM Java SDK updates in January 2016.
Vulnerability Details
CVEID: CVE-2015-7575
DESCRIPTION: The TLS protocol could allow weaker than expected security caused by a collision attack when using the MD5 hash function for signing a ServerKeyExchange message during a TLS handshake. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate a TLS server and obtain credentials. This vulnerability is commonly referred to as “SLOTH”.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109415 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/UI:U/C:H/I:L/A:N)
Affected Products and Versions
|
Principal Product and Version(s) |
| IBM Explorer for z/OS V3.0 |
Remediation/Fixes
IBM has provided patches for the affected version.
Installation instructions and the IBM Explorer for z/OS Version 3.0.0.2 update can be obtained at the following location:
Mainframe Development - Download Eclipse Tools
For users of CICS Explorer, V5.3.0.1 or higher should also be installed. CICS Explorer was rebuilt as a result of the affect this security vulnerability had on IBM Explorer for z/OS 3.0, upon which CICS Explorer is built. CICS Explorer itself was not affected by the security vulnerability so there was no associated APAR. There were no updates to the CICS Tools plug-ins that are associated with this security vulnerability.
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Important Note
IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.
References
Change History
*23 February 2016: Original copy 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:
26 November 2019
UID
swg21976483