Security Bulletin: IBM Content Navigator is susceptible to a sensitive data exposure.

Summary

IBM Content Navigator has addressed the following vulnerability.

Vulnerability Details

CVEID:CVE-2020-4687
**DESCRIPTION:**IBM Content Navigator could allow an authenticated user to view cached content of another user that they should not have access to.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/186679 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Remediation/Fixes

Workarounds and Mitigations

Add parameter ‘docParamsToIgnore’ to the server configuration and put a value in it that is not a standard URL queryParameter (e.g ‘mitigateCacheFlaw’) This will prevent the default value of security_token being used and therefore make the document caching user session specific again.

Limitations of mitigation: it will only work where docIdPrototype is ${originalDocURL} and not where it has been set to a subset of the URL parameters passed to enable ICN clearing of ViewONE cache for non-versioned documents (as in current versions of ICN).