PT-2021-3988 · Ibm · Ibm Infosphere Data Replication+1

Published 2021-07-15 · Updated 2021-07-29 · CVE-2020-4821

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions IBM InfoSphere Data Replication version 11.4 IBM InfoSphere Change Data Capture for z/OS version 10.2.1

Description The issue is related to a configuration vulnerability in IBM InfoSphere Data Replication and IBM InfoSphere Change Data Capture, which is associated with weaknesses in the authentication procedure. Under certain configurations, this could allow a user to bypass authentication mechanisms using an empty password string.

Recommendations For IBM InfoSphere Data Replication version 11.4, consider disabling the use of empty password strings as a temporary workaround until a patch is available. For IBM InfoSphere Change Data Capture for z/OS version 10.2.1, restrict access to authentication mechanisms to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

BDU:2021-04509

CVE-2020-4821

Affected Products

Ibm Infosphere Change Data Capture

Ibm Infosphere Data Replication

References · 9

• https://ibm.com/support/pages/node/6472911 · Vendor Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/189834 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04509 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-4821 · Security Note
• https://osv.dev/vulnerability/CVE-2020-4821 · Vendor Advisory
• https://ibm.com/support/pages/node/6472909 · Vendor Advisory
• https://t.me/cvenotify/18332 · Telegram Post
• https://ibm.com/blogs/psirt/security-bulletin-ibm-data-replication-management-console-authentication-affected-by-annonymous-binding-cve-2020-4821 · Note
• https://t.me/cibsecurity/26224 · Telegram Post