8.1 High
CVSS3
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.9 High
AI Score
Confidence
High
5.8 Medium
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
72.4%
CVSS v3 6.8
ATTENTION: Public exploits are available
**Vendor:**Stryker
**Equipment:**Secure II MedSurg Bed, S3 MedSurg Bed, and InTouch ICU Bed
**Vulnerability:**Reusing a Nonce
Successful exploitation of this vulnerability could allow data traffic manipulation, resulting in partial disclosure of encrypted communication or injection of data.
The following Stryker medical products are affected:
3.2.1 REUSING A NONCE, KEY PAIR IN ENCRYPTION CWE-323
An industry-wide vulnerability exists in the WPA and WPA2 protocol affected by the Key Reinstallation Attacks known as KRACK. The four-way hand shake traffic in the Wi-Fi Protected Access WPA and WPA2 protocol can be manipulated to allow nonce reuse, resulting in key reinstallation. This could allow an attacker to execute a “man-in-the-middle” attack, enabling the attacker within radio range to replay, decrypt, or spoof frames.
The following CVEs have been assigned to this group of vulnerabilities:
CVE-2017-13077: Reinstallation of the pairwise key during the four-way handshake.
CVE-2017-13078: Reinstallation of the group key during the four-way handshake.
CVE-2017-13079: Reinstallation of the Integrity Group Temporal Key (IGTK) during the four-way handshake.
CVE-2017-13080: Reinstallation of the group key during the group key handshake.
CVE-2017-13081: Reinstallation of the IGTK during the group key handshake.
CVE-2017-13082: Reinstallation of the Pairwise Transient Key (PTK) Temporal Key (TK) during the fast BSS transmission (FT) handshake.
CVE-2017-13086: Reinstallation of the Tunneled Direct-Link Setup (TDLS) Peer Key (TPK) during the TDLS handshake.
CVE-2017-13087: Reinstallation of the Group Temporal Key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame.
CVE-2017-13088: Reinstallation of the IGTK when processing a WNM Sleep Mode Response frame.
A CVSS v3 base score of 6.8 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
Mathy Vanhoef of imec-DistriNet, KU Leuven discovered the KRACK vulnerabilities. Stryker reported to NCCIC that the KRACK vulnerabilities may possibly affect these products.
Stryker has released software updates for affected products to mitigate the KRACK vulnerabilities.
Stryker recommends users take additional defensive measures to minimize the risk of exploitation. Specifically, users should:
For additional questions, users can call 1-800-STRYKER, option 2 for Stryker Medical Technical Support.
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-12-146-01B–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.
This vulnerability is exploitable from an adjacent network. High skill level is needed to exploit.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13077
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13078
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13079
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13080
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13081
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13082
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13086
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13087
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13088
cwe.mitre.org/data/definitions/323.html
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8.1 High
CVSS3
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.9 High
AI Score
Confidence
High
5.8 Medium
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
72.4%