ICS-CERT: Emerson DeltaV Multiple Vulnerabilities

Thursday, May 31, 2012

Infosec Island Admin

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ICS-CERT originally released Advisory ICSA-12-138-01P to the US-CERT secure portal on May 17, 2012, and released Update A on May 21, 2012. This web page release (including Update A) was delayed to allow users time to download and install the update.

Researcher Kuang-Chun Hung of the Security Research and Service Institute Information and Communication Security Technology Center (ICST) has identified multiple vulnerabilities in the Emerson DeltaV application.

These vulnerabilities can be exploited by a remote attacker; however, no publicly available exploits are currently known to exist. Emerson has produced a hotfix that mitigates these vulnerabilities. ICST has tested this hotfix and confirms that it fully resolves the vulnerabilities.

The following Emerson products are affected:

• DeltaV and DeltaV Workstations,
• V9.3.1, V10.3.1, V11.3, and V11.3.1,
• DeltaV ProEssentials Scientific Graph, and
• V5.0.0.6

IMPACT

These vulnerabilities, if exploited, could allow denial of service, information disclosure, or remote 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

Emerson is a global manufacturing and technology company offering multiple products and services in the industrial, commercial, and consumer markets through its network power, process management, industrial automation, climate technologies, and tools and storage businesses.

VULNERABILITY OVERVIEW

CROSS-SITE SCRIPTING:  This vulnerability enables an attacker to inject client side script into web pages viewed by other users or bypass client side security mechanisms imposed by modern web browsers. If successfully exploited, this vulnerability could allow arbitrary code execution and may require social engineering to exploit. CVE-2012-1814 has been assigned to this vulnerability. A CVSS V2 base score of 7.5 has also been assigned.

SQL INJECTION:  This vulnerability can be used by an attacker to perform database operations that were unintended by the web application designer and, in some instances, can lead to total compromise of the database server. This vulnerability, if successfully exploited, could allow arbitrary code execution. CVE-2012-1815 has been assigned to this vulnerability. A CVSS V2 base score of 7.5 has also been assigned.

DENIAL OF SERVICE:  A denial of service can be created by sending a specially crafted packet to PORTSERV.exe on both TCP/111 and UDP/111. This attack will cause the software to crash, denying service to legitimate users. CVE-2012-1816 has been assigned to this vulnerability. A CVSS V2 base score of 5 has also been assigned.

BUFFER OVERFLOW:  In the affected version, DeltaV does not properly sanitize the inputs from project files. Invalid information in certain fields can cause the program to crash and could be used to execute arbitrary code. CVE-2012-1817 has been assigned to this vulnerability. A CVSS V2 base score of 4.6 has also been assigned.

FILE MANIPULATION:  If successfully exploited, an attacker can overwrite arbitrary files on the victim’s computer in the context of the vulnerable application using the ActiveX control. CVE-2012-1818 has been assigned to this vulnerability. A CVSS V2 base score of 7.5 has also been assigned.

EXPLOITABILITY:  These vulnerabilities are remotely exploitable.

EXISTENCE OF EXPLOIT:  No known exploits specifically target this vulnerability.

DIFFICULTY:  An attacker with a medium skill level would be able to exploit these vulnerabilities.

MITIGATION

Emerson has created a hotfix that resolves these vulnerabilities. Emerson has distributed a notification in KBA NK-1200-0091 ICS-CERT ADVISORY ICSA-12-137-01 Emerson Multiple Vulnerabilities: Impact and Recommended Actions to customers who own a DeltaV Control System; the notification provides details of the vulnerabilities, recommended mitigations, and instructions on obtaining and installing the hotfix.

The full ICS-CERT advisory can be found here:

Source:  http://www.us-cert.gov/control_systems/pdf/ICSA-12-138-01.pdf

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Denial of Service SQl Injection SCADA Vulnerabilities Cross Site Scripting Buffer Overflow Advisory ICS-CERT Industrial Control Systems Emerson DeltaV
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