Security Bulletin: FileNet CMIS (FNCMIS) leveraging Spring Framework is vulnerable to a denial of service caused by improper handling of range request by the ResourceHttpRequestHandler

Summary

FileNet Content Management Interoperability Services (CMIS), which ships with IBM Content Navigator, is affected by the following vulnerability:

Spring Framework’s improper handling of ResourceHttpRequestHandler could result in denial of service condition.

Vulnerability Details

CVE-ID: CVE-2018-15756 DESCRIPTION: Pivotal Spring Framework is vulnerable to a denial of service, caused by improper handling of range request by the ResourceHttpRequestHandler. By adding a range header with a high number of ranges, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/151641&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM ECM CMIS and FileNet Collaboration Services 3.0.4

Remediation/Fixes

Product

| VRMF |Remediation/First Fix
—|—|—
IBM ECM CMIS and FileNet Collaboration Services | 3.0.4 | Download the fix IBM ECM CMIS and CS 3.0.4-iFix005 from IBM Fix central ( <https://www.ibm.com/support/fixcentral/&gt; )

Workarounds and Mitigations

FileNet Content Management Interoperability Services (CMIS), shipped with IBM Content Navigator, is vulnerable to Denial of Service (DoS) due to improper handling of range request by the ResourceHttpRequestHandler in the Spring Framework. When an attacker adds a range of headers, with a high number of range values to the request object, the framework results in DoS.
Fixed the FileNet Content Management Interoperability Services (CMIS) by upgrading the Spring Framework to version 4.3.22