Security Bulletin
Summary
IBM Rational Developer for System z has added support for TLS v1.2 with MS-CAPI in the Host Connection Emulator
Vulnerability Details
CVEID: CVE-2017-1796
DESCRIPTION: IBM Developer for z Systems uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/137381 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)
Affected Products and Versions
Rational Developer for System z Version 9.0.1.6, 9.1.1.5, 9.5.1.5
Remediation/Fixes
IBM has provided patches for all affected versions.
Follow the installation instructions in the README files included with the patch.
The fix can be obtained at the following location:
Rational Developer for System z 9.0.1.0, All platforms - 9.0.1.6 interim fix 1
Rational Developer for System z 9.1.1.0, All platforms - 9.1.1.6 fix pack
Rational Developer for z Systems 9.5.1.0, All platforms - 9.5.1.6 fix pack
Workarounds and Mitigations
Monitor CPU utilization of your Program Name instances. If utilization becomes abnormally high, stop and restart the affected instance.
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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
Acknowledgement
None
Change History
* 27 December 2017: 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:
27 October 2020
UID
swg22011808