Security Bulletin: vulnerability in snakeyaml might affect IBM Business Automation Workflow and IBM Business Process Manager (BPM) - CVE-2017-18640

Summary

IBM Business Process Manager and IBM Business Automation Workflow might be affected by a vulnerability in snakeyaml.

Vulnerability Details

CVEID:CVE-2017-18640
**DESCRIPTION:**SnakeYAML is vulnerable to a denial of service, caused by an entity expansion in Alias feature during a load operation. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/174331 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Remediation/Fixes

The recommended solution is to apply the Interim Fix (iFix) or Cumulative Fix (CF) containing APAR JR62338 as soon as practical:

• IBM Business Automation Workflow (including fix for IBM Business Process Manager V8.6.0.0 2018.03)

For IBM Business Automation Workflow V18.0 and V19.0
· Upgrade to minimal cumulative fix levels as required by iFix and then apply iFix JR62338
--OR–
· Apply cumulative fix Business Automation Workflow V20.0.0.1 or later (targeted availability 2Q 2020)

For IBM Business Process Manager V8.6
· Upgrade to minimal cumulative fix levels as required by iFix and then apply iFix JR62338
--OR–
· Upgrade to Business Automation Workflow V20.0.0.1 or later (targeted availability 2Q 2020

Workarounds and Mitigations

None