Security Bulletin: Vulnerability has been identified in SnakeYAML used by IBM Dependency Based Build

Summary

A vulnerability has been identified in SnakeYAML used by IBM Dependency Based BUild. SnakeYAML is used to load local YAML property files and is unlikely to cause a DoS incident described in the Vulnerability Details below. However, IBM recommends upgrading to version 1.1.0 or later.

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

Upgrade the IBM Dependency Based Build toolkit to IBM Dependency Based Build 1.1.0. IBM Dependency Based Build toollkit can be obtained via Shopz.

Workarounds and Mitigations

Upgrade the IBM Dependency Based Build toolkit to IBM Dependency Based Build 1.1.0 or replace the snakeyaml-1.23.jar with snakeyaml-1.26.jar.