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ESB-2014.0914 - [Win][Linux][Solaris][OSX] IBM Security AppScan Source: Increased privileges - Remote/unauthenticated

Date: 10 June 2014

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0914
    Security Bulletin: IBM Security AppScan Source can be affected by a
            escalation privilege vulnerability (CVE-2014-0936)
                               10 June 2014

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Security AppScan Source
Publisher:         IBM
Operating System:  Linux variants
                   OS X
                   Solaris
                   Windows
Impact/Access:     Increased Privileges -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2014-0936  

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21674750

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: IBM Security AppScan Source can be affected by a
escalation privilege vulnerability (CVE-2014-0936)

Security Bulletin

Document information

More support for:
IBM Security AppScan Source

Software version:
8.0, 8.5, 8.6, 8.7, 8.8, 9.0

Operating system(s):
Linux, Mac OS X, Solaris, Windows

Reference #:
1674750

Modified date:
2014-05-30

Summary

IBM Security AppScan Source is affected by a vulnerability that allows
restricted uses to escalate access and obtain confidential data.

Vulnerability Details

CVE ID:
CVE-2014-0936

DESCRIPTION:

IBM Security AppScan Source contains an escalation privilege vulnerability
that can be used by users to escalate their privileges and obtain access
to confidential data.

The attack does not require authentication, but a high degree of specialized
knowledge and techniques and adjacent network access are required. An
exploit could impact the confidentiality of information, the integrity of
data and the availability of the system.

CVSS:
CVSS Base Score: 5.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/92317 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:A/AC:H/Au:N/C:P/I:P/A:P)

Affected Products and Versions

    IBM Security AppScan Source 9.0
    IBM Security AppScan Source 8.8
    IBM Security AppScan Source 8.7
    IBM Security AppScan Source 8.6
    IBM Security AppScan Source 8.5
    IBM Security AppScan Source 8.0

Remediation/Fixes

None

Workarounds and Mitigations

By default, AppScan Source clients allow publishing of assessments to
either the backend solidDB or Oracle database (both of which are insecure
by default), or to an IBM Security AppScan Enterprise server (secure
by default). The publishing to the backend solidDB or Oracle database
is controlled via a "publish assessment" permission. Publishing to the
AppScan Enterprise server is controlled via a "save assessment" permission.

To publish in a secure manner there are a few avenues which can be
deployed today:

    Remove the "publish assessment" permission from all users including
    the default user if they have it. This will prevent any clear text
    transmission to the backend DB of the assessment artifact.
    Use an internal secure FTP server to upload assessment files for
    distribution outside of the AppScan Source client.
    Use an AppScan Enterprise Server for publishing assessment purposes.


Current releases (post AppScan Source 8.7) already disable this permission by
default. A user who wishes to still use the "publish assessment" permission
can still do so by adding it to the users whom they wish to be able to
perform the publish action.

To remove the publish assessments permission:

1. Open the user management applet
2. Open each user and remove the "Publish Assessment" permission.
3. Be sure the default user also has this permission removed. New users
added from ASE will get all of the permissions specified in this template


References
Complete CVSS Guide
On-line Calculator V2
CVE-2014-0936
http://xforce.iss.net/xforce/xfdb/92317

Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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

According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency
and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT
WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING
THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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===========================================================================
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