SpecView Directory Traversal
ICSA： ICS Advisory (ICSA-13-011-02)
This advisory is a follow up to the original alert titled ICS-ALERT-12-214-01 SpecView Directory Traversal that was published August 01, 2012, on the ICS-CERT Web. This advisory provides mitigation details for a vulnerability, which impacts SpecView products.
Independent researcher Luigi Auriemma identified a directory traversal vulnerability with proof-of-concept (PoC) exploit code affecting SpecView, a supervisory control and data acquisition/human-machine interface (SCADA/HMI) product. Successful exploitation could result in data leakage and file manipulation. This report was released without coordination with either the vendor or ICS-CERT.
This vulnerability could be exploited remotely. Exploits that target this vulnerability are publicly available.
SpecView has released a new build that addresses this vulnerability. Luigi Auriemma has verified the new build fixes the vulnerability.
The following SpecView versions are affected:
- SpecView 2.5 Build 853 and earlier.
Successful exploitation could result in data leakage and file manipulation.
Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.
SpecView is a US-based company that maintains offices in the United States and United Kingdom.
The affected product, SpecView, is HMI software for SCADA equipment. SpecView is used worldwide in various industries, primarily in critical manufacturing.
By sending specially crafted packets to the SpecView webserver on Port 80/TCP, an attacker can cause a path traversal.
This vulnerability could be exploited remotely.
Existence of Exploit
Exploits that target this vulnerability are publicly available.
An attacker with a high skill would be able to exploit this vulnerability.
SpecView recommends users download and install the update from their web site which mitigates the vulnerability.
ICS-CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks.
- Minimize network exposure for all control system devices. Critical devices should not directly face 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 VPN is only as secure as the connected devices.
ICS-CERT also provides a section for control systems security recommended practices on the US-CERT Web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to taking defensive measures.
Additional mitigation guidance and recommended practices are publicly available in the ICS-CERT Technical Information Paper, ICS-TIP-12-146-01A—Targeted Cyber Intrusion Detection and Mitigation Strategies.
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. Path Traversal, http://cwe.mitre.org/data/definitions/23.html, CWE-23: Relative Path Traversal, Web site last accessed January 11, 2013.