CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
23.4%
This updated advisory is a follow-up to the original advisory titled ICSMA-18-228-01 Philips PageWriter TC10, TC20, TC30, TC50, and TC70 Cardiographs that was published August 16, 2018, on the ICS webpage on us-cert.gov.
Successful exploitation of these vulnerabilities could allow buffer overflows, or allow an attacker to access and modify settings on the device.
The following versions of PageWriter TC10, TC20, TC30, TC50, TC70 Cardiographs are affected:
4.2.1 IMPROPER INPUT VALIDATION CWE-20
The PageWriter device does not sanitize data entered by user. This can lead to buffer overflow or format string vulnerabilities.
CVE-2018-14799 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
4.2.2 USE OF HARD-CODED CREDENTIALS CWE-798
An attacker with both the superuser password and physical access can enter the superuser password that can be used to access and modify all settings on the device, as well as allow the user to reset existing passwords.
CVE-2018-14801 has been assigned to this vulnerability. A CVSS v3 base score of 6.1 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).
Philips reported these vulnerabilities to CISA.
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Philips plans an update to correct these issues in a release scheduled for the third quarter of 2020.
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Philips has also provided the following information regarding an operating system that is no longer supported by the operating system manufacturer:
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Philips offers the following additional mitigation advice:
Users can contact Philipsβ customer service, and find more details in the Philipsβ advisory (external link).
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov. 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 webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14799
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14801
www.usa.philips.com/healthcare/solutions/customer-service-solutions
www.usa.philips.com/healthcare/solutions/customer-service-solutions
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-18-228-01
cwe.mitre.org/data/definitions/20.html
cwe.mitre.org/data/definitions/798.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
23.4%