IBM Support

JR50092: THE FILE MIME TYPE IS NOT VALIDATED FOR DOCUMENTS CREATED OR UPDATED FROM THE DOCUMENT LIST COACH VIEW

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • You cannot restrict file uploads by mime-type in a document list
    coach view. As a result, HTML that contains embedded JavaScript
    can be uploaded and run in the browser.
    

Local fix

Problem summary

  • The IBM BPM document management feature might allow a remote
    attacker to include arbitrary files. A remote attacker might
    upload a malicious file from a remote system, which might allow
    the attacker to run  arbitrary code on the vulnerable web
    server.
    

Problem conclusion

  • A fix is available for IBM BPM 7.2.0.5, 7.5.1.2, 8.0.1.2
    and 8.5.0.1 that introduces additional functionality to the
    product with two server-side configuration options (one for file
    uploads and one for file downloads):
    
    A server-side configuration option is introduced which allows an
    optional white-list of mime-types to be specified. Mime-types
    included in the list will be allowed for upload while all other
    mime types will be blocked from upload.
    
    A server-side configuration option is introduced which allows an
    optional black-list of mime-type mappings to be specified. Each
    mime-type mapping allows for a conversion to be made from a
    specific mime-type to a specific mime-type upon download.
    
    The following example is a sample configuration of new options,
    which you can configure in the 100Custom.xml file:
    
    <server>
      <!-- mime type white list which specifies mime types accepted
    for -->
      <!-- upload to document list or document attachment -->
      <document-attachment-accepted-mime-types>
        <!-- specifies whether to allow a null mime type for upload
    -->
        <allow-null-mime-type>false</allow-null-mime-type>
        <!-- lists the mime types allowed for upload -->
        <mime-type>text/plain</mime-type>
        <mime-type>img/png</mime-type>
      </document-attachment-accepted-mime-types>
    
      <!-- mime type black list which specifies mappings from
    unacceptable -->
      <!-- mime types to acceptable mime types for download from -->
      <!-- document list or document attachment -->
      <document-attachment-download-mime-types>
        <!-- will map text/html mime type to text/plain mime type
    -->
        <mime-type-map>
          <from>text/html</from>
          <to>text/plain</to>
        </mime-type-map>
        <!-- missing <to> element implies mapping to
    content/octet-stream -->
        <mime-type-map>
          <from>application/pdf</from>
          </mime-type-map>
      </document-attachment-download-mime-types>
    </server>
    
    Note: The default configuration (without configuration
    information provided in 100Custom.xml) acts as a blacklist for
    the text/html mime-type and maps it to the text/plain mime-type.
    Providing a configuration in 100Custom.xml overrides the default
    configuration. As a result, for text/html to remain on the
    blacklist, it should be explicitly added in 100Custom.xml.
    
    To retrieve this fix, on Fix Central
    (http://www.ibm.com/support/fixcentral) search for JR50092:
    
        1. Select IBM Business Process Manager with your edition
    from the product selector, the installed version to the fix pack
    level, and your platform, and then click Continue.
        2. Select APAR or SPR, enter JR50092, and click Continue.
    
    When you download fix packages, ensure that you also download
    the readme file for each fix. Review each readme file for
    additional installation instructions and information about the
    fix.
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR50092

  • Reported component name

    BPM STANDARD

  • Reported component ID

    5725C9500

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-04-29

  • Closed date

    2014-08-29

  • Last modified date

    2014-08-29

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    JR50399

Fix information

  • Fixed component name

    BPM STANDARD

  • Fixed component ID

    5725C9500

Applicable component levels

  • R751 PSY

       UP

  • R801 PSY

       UP

  • R850 PSY

       UP

  • R855 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFTDH","label":"IBM Business Process Manager Standard"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
29 August 2014