CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.9%
CVSS v3 9.8
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
Successful exploitation of this vulnerability may result in remote code execution with administrative privileges.
The following versions of Wonderware License Server use the vulnerable Flexara Imgrd (Versions 11.13.1.1 and prior):
Only users with the Counted Licenses feature with โArchestrAServer.licโ in Wonderware License Server are affected.
Wonderware License Server is delivered by:
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).
An anonymous researcher reported this vulnerability to AVEVA, who then reported it to NCCIC.
AVEVA recommends affected users install update โHotfix Wonderware License Server VU-485744โ 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:
<https://sw.aveva.com/hubfs/assets-2018/pdf/security-bulletin/SecurityBulletin_LFSec129.pdf>
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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. 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-12-146-01BโTargeted 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8277
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cwe.mitre.org/data/definitions/119.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
softwaresupportsp.schneider-electric.com/#/producthub/details?id=5076
sw.aveva.com/hubfs/assets-2018/pdf/security-bulletin/SecurityBulletin_LFSec129.pdf
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CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.9%