Security Bulletin
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
Affected Product(s) | Version(s) |
IBM Content Navigator | 3.0CD |
Remediation/Fixes
Product | VMRF | Remediation / First Fix |
IBM Content Navigator | 3.0 Continuous Delivery | ICN 3.0.7 iFix 5 and above, ICN 3.0.8 iFix 1 and above. |
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).
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References
Change History
19 Aug 2020: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
19 August 2020
UID
ibm16262423