Security Bulletin: Rational Developer for System z - Add support for TLS v1.2 with MS-CAPI in HCE

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.