1. EXECUTIVE SUMMARY
- ATTENTION: Exploitable remotely/Low skill level to exploit
- Vendor: AVEVA Software, LLC (AVEVA)
- Equipment: Wonderware License Server
- Vulnerability: Improper Restriction of Operations within the Bounds of a Memory Buffer
2. RISK EVALUATION
Successful exploitation of this vulnerability may result in remote code execution with administrative privileges.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Archestra License Server Software EasyLicenser v.2.5.01 This program provides Easy-to-use, Low-Cost, and Flexible License Management EasyLicenser is a simple, low-cost and powerful application license manager focused on ease-of-use for both the program vendor and the end-user. Archestra License Server Software EasyLicenser v.2.5.01 This program provides Easy-to-use, Low-Cost, and Flexible License Management EasyLicenser is a simple, low-cost and powerful application license manager focused on ease-of-use for both the program vendor and the end-user. The Wonderware Information Server 3.0 installation CD. They are located in the License Server folder. Run Setup.exe to begin the installation of ArchestrA License Server. The the following splash screen appears: Figure 1: License Server Splash Screen 2. Click Next, then select the default settings throughout the installation process. Wonderware License Server A guide to uninstall Wonderware License Server from your computer This web page is about Wonderware License Server for Windows. Here you can find details on how to remove it from your computer. It was created for Windows by Schneider Electric Software, LLC.
The following versions of Wonderware License Server use the vulnerable Flexara Imgrd (Versions 11.13.1.1 and prior):
- Wonderware License Server v4.0.13100 and prior.
Only users with the Counted Licenses feature with 'ArchestrAServer.lic' in Wonderware License Server are affected.
Wonderware License Server is delivered by:
- Wonderware Information Server 4.0 SP1 and prior, and
- Historian Client 2014 R4 SP2 P02 and prior.
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119
Buffer overflows in lmgrd and vendor daemon in Flexera FlexNet Publisher may allow remote attackers to execute arbitrary code via a crafted packet, resulting in remote code execution with administrator privileges.
CVE-2015-8277 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy, Food and Agriculture, and Water and Wastewater
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United Kingdom
3.4 RESEARCHER
An anonymous researcher reported this vulnerability to AVEVA, who then reported it to NCCIC.
4. MITIGATIONS
AVEVA recommends affected users install update 'Hotfix Wonderware License Server VU-485744' or later, which can be downloaded from:
https://softwaresupportsp.schneider-electric.com/#/producthub/details?id=5076 (login required)
AVEVA has published Security Bulletin LFSEC00000129. It can be found at the following location:
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
- 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.
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. Business in a box 94fbr. 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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
Contact Information
- Wonderware Information Server 4.0 SP1 and prior, and
- Historian Client 2014 R4 SP2 P02 and prior.
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119
Buffer overflows in lmgrd and vendor daemon in Flexera FlexNet Publisher may allow remote attackers to execute arbitrary code via a crafted packet, resulting in remote code execution with administrator privileges.
CVE-2015-8277 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy, Food and Agriculture, and Water and Wastewater
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United Kingdom
3.4 RESEARCHER
An anonymous researcher reported this vulnerability to AVEVA, who then reported it to NCCIC.
4. MITIGATIONS
AVEVA recommends affected users install update 'Hotfix Wonderware License Server VU-485744' or later, which can be downloaded from:
https://softwaresupportsp.schneider-electric.com/#/producthub/details?id=5076 (login required)
AVEVA has published Security Bulletin LFSEC00000129. It can be found at the following location:
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
- 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.
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. Business in a box 94fbr. 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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
Contact Information
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870 Best bittorrent client reddit.
For industrial control systems cybersecurity information: https://us-cert.cisa.gov/ics
or incident reporting: https://us-cert.cisa.gov/report
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