9.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
0.007 Low
EPSS
Percentile
80.6%
Successful exploitation of these vulnerabilities could lead to remote code execution or denial of service.
Siemens reports these vulnerabilities were identified in the webserver of the following Q200 devices:
3.2.1 SESSION FIXATION CWE-384
Affected devices do not renew the session cookie after login/logout and accept user defined session cookies. An attacker could overwrite the stored session cookie of a user. After the victim has logged in, the attacker is given access to the user’s account through the activated session.
CVE-2022-43398 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).
3.2.2 IMPROPER INPUT VALIDATION CWE-20
Affected devices do not properly validate the Language-parameter in requests to the web interface on port 443/tcp. This could allow an authenticated remote attacker to crash the device (followed by an automatic reboot) or to execute arbitrary code on the device.
CVE-2022-43439 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
3.2.3 IMPROPER INPUT VALIDATION CWE-20
Affected devices do not properly validate the RecordType-parameter in requests to the web interface on port 443/tcp. This could allow an authenticated remote attacker to crash the device (followed by an automatic reboot) or to execute arbitrary code on the device.
CVE-2022-43545 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
3.2.4 IMPROPER INPUT VALIDATION CWE-20
Affected devices do not properly validate the EndTime-parameter in requests to the web interface on port 443/tcp. This could allow an authenticated remote attacker to crash the device (followed by an automatic reboot) or to execute arbitrary code on the device.
CVE-2022-43546 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
3.2.5 CROSS-SITE REQUEST FORGERY (CSRF) CWE-352
The web interface of the affected devices is vulnerable to cross-site request forgery attacks. By tricking an authenticated victim user to click a malicious link, an attacker could perform arbitrary actions on the device on behalf of the victim user.
CVE-2023-30901 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).
3.2.6 INCORRECT PERMISSION ASSIGNMENT FOR CRITICAL RESOURCE CWE-732
Affected devices are missing cookie protection flags when using the default settings. An attacker who gains access to a session token can use it to impersonate a legitimate application user.
CVE-2023-31238 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L).
Michael Messner from Siemens Energy reported these vulnerabilities to Siemens.
Siemens has released an update for POWER METER SICAM Q200 family and recommends updating to the latest version.
Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
Operators of critical power systems (e.g., TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid’s reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends protecting network access with appropriate mechanisms (e.g., firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.
Recommended security guidelines can be found at: <https://www.siemens.com/gridsecurity>
For more information see the associated Siemens security advisory SSA-887249 in HTML and CSAF.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 at cisa.gov/ics. Several CISA products detailing cyber defense best 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 at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
No known public exploits specifically target these vulnerabilities. These vulnerabilities are exploitable remotely. These vulnerabilities have low attack complexity.
cert-portal.siemens.com/productcert/csaf/ssa-887249.json
cert-portal.siemens.com/productcert/html/ssa-887249.html
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/20.html
cwe.mitre.org/data/definitions/20.html
cwe.mitre.org/data/definitions/20.html
cwe.mitre.org/data/definitions/352.html
cwe.mitre.org/data/definitions/384.html
cwe.mitre.org/data/definitions/732.html
new.siemens.com/global/en/products/services/cert.html#SecurityPublications
nvd.nist.gov/vuln/detail/CVE-2022-43398
nvd.nist.gov/vuln/detail/CVE-2022-43439
nvd.nist.gov/vuln/detail/CVE-2022-43545
nvd.nist.gov/vuln/detail/CVE-2022-43546
nvd.nist.gov/vuln/detail/CVE-2023-30901
nvd.nist.gov/vuln/detail/CVE-2023-31238
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/ww/en/view/109743592/
twitter.com/CISAgov
twitter.com/intent/tweet?text=%E2%80%8BSiemens%20SICAM%20Q200%20Devices+https://www.cisa.gov/news-events/ics-advisories/icsa-23-166-03
us-cert.cisa.gov/ics/Recommended-Practices
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/ncas/tips/ST04-014
www.cisa.gov/uscert/sites/default/files/publications/emailscams_0905.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-23-166-03&title=%E2%80%8BSiemens%20SICAM%20Q200%20Devices
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-23-166-03
www.oig.dhs.gov/
www.siemens.com/gridsecurity
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-23-166-03
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=%E2%80%8BSiemens%20SICAM%20Q200%20Devices&body=www.cisa.gov/news-events/ics-advisories/icsa-23-166-03