CVE Vulnerabilities

CVE-2020-3946

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Published: Apr 20, 2020 | Modified: Jul 21, 2021
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

InstallBuilder AutoUpdate tool and regular installers enabling built with versions earlier than 19.11 are vulnerable to Billion laughs attack (denial-of-service).

Weakness

The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.

Affected Software

Name Vendor Start Version End Version
Installbuilder Vmware * 19.11.0 (excluding)

Potential Mitigations

References