CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:A/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
29.9%
**ATTENTION:**Remotely exploitable/low skill level to exploit.
Vendor: ABB
Equipment: Ellipse
Vulnerability: Unprotected Transport of Credentials
ABB reports that the vulnerability affects Ellipse 8.3 through Ellipse 8.9 released prior to December 2017 (including Ellipse Select).
Successful exploitation of this vulnerability could allow an attacker to discover authentication credentials by sniffing the network traffic.
ABB has released the following product updates to mitigate the vulnerability:
Please see ABB Cyber Security Advisory number Ellipse201703 for more information about this vulnerability, as well as additional mitigations and workarounds at the following location:
http://search-ext.abb.com/library/Download.aspx?DocumentID=9AKK107045A7341&Action=Launch
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
ICS-CERT 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 in the ICSβCERT Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site.
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.
No known public exploits specifically target this vulnerability.
A vulnerability exists in the authentication of Ellipse to LDAP/AD using the LDAP protocol. An attacker could exploit the vulnerability by sniffing local network traffic, allowing the discovery of authentication credentials.
CVE-2017-16731 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
ABB self-reported the vulnerability to ICS-CERT.
Critical Infrastructure Sectors: Critical Manufacturing, Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Switzerland
search-ext.abb.com/library/Download.aspx?DocumentID=9AKK107045A7341&Action=Launch
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-16731
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cwe.mitre.org/data/definitions/523.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:A/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
29.9%