CVE Vulnerabilities

CVE-2021-20464

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

Published: Apr 22, 2022 | Modified: Jun 03, 2022
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

IBM Cognos Analytics PowerPlay (IBM Cognos Analytics 11.1.7, 11.2.0, and 11.1.7) could be vulnerable to an XML Bomb attack by a malicious authenticated user. IBM X-Force ID: 196813.

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
Cognos_analytics Ibm 11.1.7 (including) 11.1.7 (including)
Cognos_analytics Ibm 11.2.0 (including) 11.2.0 (including)
Cognos_analytics Ibm 11.2.1 (including) 11.2.1 (including)

Potential Mitigations

References