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             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0978
                     Ecava IntegraXor Vulnerabilities
                               18 April 2016

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

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

Product:           Ecava IntegraXor
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated      
                   Administrator Compromise        -- Remote with User Interaction
                   Access Privileged Data          -- Remote/Unauthenticated      
                   Cross-site Scripting            -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-2306 CVE-2016-2305 CVE-2016-2304
                   CVE-2016-2303 CVE-2016-2302 CVE-2016-2301
                   CVE-2016-2300 CVE-2016-2299 

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-16-105-03

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

Advisory (ICSA-16-105-03)
Ecava IntegraXor Vulnerabilities

Original release date: April 14, 2016 | Last revised: April 15, 2016

Legal Notice

All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the
header. For more information about TLP, see http://www.us-cert.gov/tlp/.

OVERVIEW

Independent security researcher Marcus Richerson and Steven Seeley of Source
Incite, working with Trend Micro's Zero Day Initiative, independently
identified vulnerabilities in Ecava's IntegraXor application. Ecava
has produced a new version to mitigate these vulnerabilities. Marcus
Richerson has tested the new version to validate that it resolves all the
vulnerabilities, except for one incomplete fix, which Ecava plans to fully
address in an upcoming release.

These vulnerabilities could be exploited remotely.

Exploits that target these vulnerabilities are known to be publicly
available.

AFFECTED PRODUCTS

The following Ecava IntegraXor versions are affected:

    IntegraXor, versions prior to Version 5.0, build 4522

IMPACT

Successful exploitation of these vulnerabilities may allow a remote attacker
to gain full access to an affected system.

Impact to individual organizations depends on many factors that are unique
to each organization. NCCIC/ICS-CERT recommends that organizations evaluate
the impact of these vulnerabilities based on their operational environment,
architecture, and product implementation.

BACKGROUND

Ecava Sdn Bhd (Ecava) is a Malaysia-based software development company
that provides the IntegraXor SCADA product. Ecava specializes in factory
and process automation solutions.

The affected product, IntegraXor, is a suite of tools used to create and
run a web-based human-machine interface for a SCADA system. According to
Ecava, IntegraXor is deployed across several sectors including Critical
Manufacturing, Energy, Water and Wastewater Systems, and others. Ecava
estimates that this product is used in multiple countries, with the largest
installations based in the United Kingdom, the United States, Australia,
Poland, Canada, and Estonia.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION[a]

IntegraXor HMI web server transmits unencrypted sensitive information.

CVE-2016-2306[b] has been assigned to this vulnerability. A CVSS
v3 base score of 9.8 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).[c]

CROSS-SITE SCRIPTING[d]

The application is vulnerable to Document Model Object (DMO)-based cross-site
scripting, which can be exploited by including malicious HTML and Javascript
into the URL. If the HMI operator were using the SCADA application and
were to click a specially crafted link or go to a malicious web site,
then an attacker may be able to perform malicious functions on the SCADA
software using Javascript.

CVE-2016-2305[e] has been assigned to this vulnerability. A CVSS
v3 base score of 4.7 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N).[f]

IMPROPER NEUTRALIZATION OF ALTERNATE XSS SYNTAX[g]

The application does not set the HTTPOnly flag on the session cookie,
which may allow a remote attacker to steal the cookie and resend it to
potentially log in as an administrative user.

CVE-2016-2304[h] has been assigned to this vulnerability. A CVSS
v3 base score of 7.1 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N).[i]

IMPROPER NEUTRALIZATION OF CRLF SEQUENCES IN HTTP HEADERS[j]

The IntegraXor HMI does not neutralize special elements in inputs.

CVE-2016-2303[k] has been assigned to this vulnerability. A CVSS
v3 base score of 5.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).[l]

IMPROPER AUTHORIZATION[m]

The application does not properly check whether a user has authenticated
prior to accessing some sensitive web pages.

CVE-2016-2300[n] has been assigned to this vulnerability. A CVSS
v3 base score of 6.5 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).[o]

SQL INJECTION[p]

The application is vulnerable to unauthenticated SQL injection that may
allow an attacker to remotely execute code in certain situations.

CVE-2016-2299[q] has been assigned to this vulnerability. A CVSS
v3 base score of 7.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).[r]

INFORMATION EXPOSURE[s]

The application uses detailed error messages that could be used by an
attacker to extract information that could be used in an attack.

CVE-2016-2302[t] has been assigned to this vulnerability. A CVSS
v3 base score of 5.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).[u]

SQL INJECTION[v]

The application is vulnerable to authenticated SQL injection that may
allow an attacker to extract information about the database and further
exploit the application.

CVE-2016-2301[w] has been assigned to this vulnerability. A CVSS
v3 base score of 6.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).[x]

VULNERABILITY DETAILS

EXPLOITABILITY

These vulnerabilities could be exploited remotely.

EXISTENCE OF EXPLOIT

Exploits that target these vulnerabilities are publicly available.

DIFFICULTY

An attacker with a low skill would be able to exploit these vulnerabilities.

MITIGATION

Ecava has produced a new version that addresses the reported vulnerabilities,
as well as some identified security risks, in Version 5.0, build 4522. Ecava
has resolved the authenticated SQL injection associated with operator and
supervisor accounts. Ecava is planning to address the remaining risk to
administrative accounts in an upcoming release. Ecava's new version of the
IntegraXor software, Version 5.0, build 4522 is available for download at
the following link:

http://www.integraxor.com/download/beta.msi?5.0.4525.2.

Ecava recommends downloading the latest build to address the identified
vulnerabilities.

Ecava has released a vulnerability note, which is available at the
following URL:

http://www.integraxor.com/blog/category/security/vulnerability-note/.

ICS-CERT recommends that users take defensive measures to minimize the
risk of exploitation of these vulnerabilities. Specifically, users should:

    Restrict administrative access to the minimum number of required users.
    Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet.
    Locate control system networks and remote devices behind firewalls,
    and isolate them from the business network.
    When remote access is required, use secure methods, such as Virtual
    Private Networks (VPNs), recognizing that VPNs may have vulnerabilities
    and should be updated to the most current version available. Also
    recognize that VPN is only as secure as the connected devices.

ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.

ICS-CERT also provides a section for control systems
security recommended practices on the ICS-CERT web page at:
http://ics-cert.us-cert.gov/content/recommended-practices. Several
recommended practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies.

Additional mitigation guidance and recommended practices are
publicly available in the ICS-CERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site
(http://ics-cert.us-cert.gov/).

Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.

    a.
    CWE-319: Cleartext Transmission of Sensitive Information,
    http://cwe.mitre.org/data/definitions/319.html, web site last accessed
    April 14, 2016.
    b.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2306,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    c.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
    web site last accessed April 14, 2016.
    d.
    CWE-79: Improper Neutralization of Input During Web Page Generation
    ('Cross-site Scripting'), http://cwe.mitre.org/data/definitions/79.html,
    web site last accessed April 14, 2016.
    e.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2305,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    f.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S...,
    web site last accessed April 14, 2016.
    g.
    CWE-87: Improper Neutralization of Alternate XSS Syntax,
    http://cwe.mitre.org/data/definitions/87.html, web site last accessed
    April 14, 2016.
    h.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2304,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    i.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S...,
    web site last accessed April 14, 2016.
    j.
    CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP
    Response Splitting'), http://cwe.mitre.org/data/definitions/113.html,
    web site last accessed April 14, 2016.
    k.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2303,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    l.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
    web site last accessed April 14, 2016.
    m.
    CWE-285: Improper Authorization,
    http://cwe.mitre.org/data/definitions/285.html, web site last accessed
    April 14, 2016.
    n.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2300,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    o.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
    web site last accessed April 14, 2016.
    p.
    CWE-89: Improper Neutralization of Special Elements used in an SQL
    Command ('SQL Injection'), http://cwe.mitre.org/data/definitions/89.html,
    web site last accessed April 14, 2016.
    q.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2299,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    r.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
    web site last accessed April 14, 2016.
    s.
    CWE-200: Information Exposure,
    http://cwe.mitre.org/data/definitions/200.html, web site last accessed
    April 14, 2016.
    t.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2302,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    u.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
    web site last accessed April 14, 2016.
    v.
    CWE-89: Improper Neutralization of Special Elements used in an SQL
    Command ('SQL Injection'), http://cwe.mitre.org/data/definitions/89.html,
    web site last accessed April 14, 2016.
    w.
    NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2301,
    NIST uses this advisory to create the CVE web site report. This web
    site will be active sometime after publication of this advisory.
    x.
    CVSS Calculator,
    https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S...,
    web site last accessed April 14, 2016.


Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900

For industrial control systems security information and incident reporting:
http://ics-cert.us-cert.gov

ICS-CERT continuously strives to improve its products and services. You
can help by choosing one of the links below to provide feedback about
this product.

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