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» ESB-2012.0497 - ALERT [Win] Measuresoft ScadaPro: Ex...
ESB-2012.0497 - ALERT [Win] Measuresoft ScadaPro: Execute arbitrary code/commands - Remote/unauthenticated
28 May 2012
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0497 ICSA-12-145-01 MEASURESOFT SCADAPRO DLL HIJACK 28 May 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Measuresoft ScadaPro Server prior to 4.0.0 Measuresoft ScadaPro Client prior to 4.0.0 Publisher: US-CERT Operating System: Windows 7 Windows Vista Windows XP Windows Server 2003 Windows 2000 Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-1824 Original Bulletin: http://www.us-cert.gov/control_systems/pdf/ICSA-12-145-01.pdf - --------------------------BEGIN INCLUDED TEXT-------------------- ICS-CERT ADVISORY ICSA-12-145-01 MEASURESOFT SCADAPRO DLL HIJACK May 24, 2012 OVERVIEW Independent researcher Carlos Mario Penagos Hollmann identified a remotely exploitable, uncontrolled search path element vulnerability, commonly referred to as a DLL hijack, in Measuresofts ScadaPro application. Measuresoft has produced an upgrade to address this vulnerability. Mr. Hollmann has verified that the new version resolves the vulnerability. AFFECTED PRODUCTS The following Measuresoft products are affected: ScadaPro Server, prior to Version 4.0.0, and ScadaPro Client, prior to Version 4.0.0. IMPACT Successful exploitation of this vulnerability may lead to arbitrary code execution. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. BACKGROUND ScadaPro is a supervisory control and data acquisition (SCADA) system used in the power generation, oil and gas, pharmaceuticals, and manufacturing sectors. According to Measuresoft, ScadaPro is sold in multiple countries by various third-party distributors, making total deployment difficult to quantify. Measuresoft Development Ltd. is headquartered in Louth, Ireland, with an office in Missouri City, Texas. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW UNCONTROLLED SEARCH PATH ELEMENT (a) ScadaPro uses a fixed or controlled search path to find resources, which could allow an unauthorized user to easily locate and exploit one or more locations. An unauthorized user could place a malicious DLL in a directory where it could be loaded before the valid DLL. An attacker must have access to the host file system to exploit this vulnerability. If exploited, this vulnerability could allow execution of arbitrary code. CVE-2012-1824b has been assigned to this vulnerability. A CVSS v2 base score of 6 has been assigned; the CVSS vector string is (AV:L/AC:H/Au:S/C:C/I:C/A:C).(c) VULNERABILITY DETAILS EXPLOITABILITY This vulnerability can be remotely exploited. EXISTENCE OF EXPLOIT No known public exploits specifically target this vulnerability. DIFFICULTY An attacker with a moderate skill level could be able to exploit these vulnerabilities. MITIGATION Measuresoft has produced an upgrade to address this vulnerability. Links to the upgrade can be found here: ScadaPro Server: http://www.measuresoft.net/download/versions.aspx?v=CB&d=Server, and ScadaPro Client: http://www.measuresoft.net/download/versions.aspx?v=CB&d=Client. Microsoft has also released a Security Advisory (2269637). (d) (a). CWE, http://cwe.mitre.org/data/definitions/427.html, Web site last accessed May 25, 2012. (b). NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-1824, NIST uses this ICS-CERT Advisory to create the CVE Web site report. This Web site will be active sometime after publication of this advisory. (c). CVSS Calculator, http://nvd.nist.gov/cvss.cfm?version=2&vector=(AV:L/AC:H/Au:S/C:C/I:C/A:C), Web site last visited May 25, 2012. ICS-CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks. Do not click web links or open unsolicited attachments in email messages. Refer to Recognizing and Avoiding Email Scams (e) Refer to Avoiding Social Engineering and Phishing Attacks for more information on avoiding email scams. (f) Minimize network exposure for all control system devices. Critical devices should not directly face the Internet. for more information on social engineering attacks. 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 VPN is only as secure as the connected devices. The Control Systems Security Program (CSSP) also provides a section for control systems security recommended practices on the CSSP web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. (g) 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. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to taking defensive measures. (d). Microsoft Security Advisory, http://technet.microsoft.com/en-us/security/advisory/2269637, Web site visited May 25, 2012. (e). Recognizing and Avoiding Email Scams, http://www.us-cert.gov/reading_room/emailscams_0905.pdf, Web site last accessed May 25, 2012 (f). National Cyber Alert System Cyber Security Tip ST04-014, http://www.us-cert.gov/cas/tips/ST04-014.html, Web site last accessed May 25, 2012 (g). CSSP Recommended Practices, http://www.us-cert.gov/control_systems/practices/Recommended_Practices.html, Web site last accessed May 25, 2012. ICS-CERT CONTACT For any questions related to this report, please contact ICS-CERT at: Email: firstname.lastname@example.org Toll Free: 1-877-776-7585 For CSSP Information and Incident Reporting: www.ics-cert.org DOCUMENT FAQ What is an ICS-CERT Advisory? An ICS-CERT Advisory is intended to provide awareness or solicit feedback from critical infrastructure owners and operators concerning ongoing cyber events or activity with the potential to impact critical infrastructure computing networks. When is vulnerability attribution provided to researchers? Attribution for vulnerability discovery is always provided to the vulnerability reporter unless the reporter notifies ICS-CERT that they wish to remain anonymous. ICS-CERT encourages researchers to coordinate vulnerability details before public release. The public release of vulnerability details prior to the development of proper mitigations may put industrial control systems and the public at avoidable risk. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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