As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
Successful exploitation of these vulnerabilities could allow an attacker to inject commands or exploit buffer overflow vulnerabilities which could lead to sensitive information disclosure, unauthenticated denial-of-service or unauthenticated remote code execution.
The following products of Siemens, are affected:
3.2.1 BUFFER COPY WITHOUT CHECKING SIZE OF INPUT (‘CLASSIC BUFFER OVERFLOW’) CWE-120
There are buffer overflow vulnerabilities in the underlying CLI service that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba’s access point management protocol) UDP port (8211). Successful exploitation of these vulnerabilities result in the ability to execute arbitrary code as a privileged user on the underlying operating system.
CVE-2023-45614 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.2 BUFFER COPY WITHOUT CHECKING SIZE OF INPUT (‘CLASSIC BUFFER OVERFLOW’) CWE-120
There are buffer overflow vulnerabilities in the underlying CLI service that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba’s access point management protocol) UDP port (8211). Successful exploitation of these vulnerabilities result in the ability to execute arbitrary code as a privileged user on the underlying operating system.
CVE-2023-45615 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.3 BUFFER COPY WITHOUT CHECKING SIZE OF INPUT (‘CLASSIC BUFFER OVERFLOW’) CWE-120
There is a buffer overflow vulnerability in the underlying AirWave client service that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba’s access point management protocol) UDP port (8211). Successful exploitation of this vulnerability results in the ability to execute arbitrary code as a privileged user on the underlying operating system.
CVE-2023-45616 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.4 IMPROPER INPUT VALIDATION CWE-20
There are arbitrary file deletion vulnerabilities in the CLI service accessed by PAPI (Aruba’s access point management protocol). Successful exploitation of these vulnerabilities result in the ability to delete arbitrary files on the underlying operating system, which could lead to the ability to interrupt normal operation and impact the integrity of the access point.
CVE-2023-45617 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).
3.2.5 IMPROPER INPUT VALIDATION CWE-20
There are arbitrary file deletion vulnerabilities in the AirWave client service accessed by PAPI (Aruba’s access point management protocol). Successful exploitation of these vulnerabilities result in the ability to delete arbitrary files on the underlying operating system, which could lead to the ability to interrupt normal operation and impact the integrity of the access point.
CVE-2023-45618 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).
3.2.6 IMPROPER INPUT VALIDATION CWE-20
There is an arbitrary file deletion vulnerability in the RSSI service accessed by PAPI (Aruba’s access point management protocol). Successful exploitation of this vulnerability results in the ability to delete arbitrary files on the underlying operating system, which could lead to the ability to interrupt normal operation and impact the integrity of the access point.
CVE-2023-45619 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).
3.2.7 IMPROPER INPUT VALIDATION CWE-20
Unauthenticated Denial-of-Service (DoS) vulnerabilities exist in the CLI service accessed via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to interrupt the normal operation of the affected access point.
CVE-2023-45620 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.2.8 IMPROPER INPUT VALIDATION CWE-20
Unauthenticated Denial-of-Service (DoS) vulnerabilities exist in the CLI service accessed via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to interrupt the normal operation of the affected access point.
CVE-2023-45621 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.2.9 IMPROPER INPUT VALIDATION CWE-20
Unauthenticated Denial-of-Service (DoS) vulnerabilities exist in the BLE daemon service accessed via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to interrupt the normal operation of the affected access point.
CVE-2023-45622 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.2.10 IMPROPER INPUT VALIDATION CWE-20
Unauthenticated Denial-of-Service (DoS) vulnerabilities exist in the Wi-Fi Uplink service accessed via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to interrupt the normal operation of the affected access point.
CVE-2023-45623 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.2.11 IMPROPER INPUT VALIDATION CWE-20
An unauthenticated Denial-of-Service (DoS) vulnerability exists in the soft ap daemon accessed via the PAPI protocol. Successful exploitation of this vulnerability results in the ability to interrupt the normal operation of the affected access point.
CVE-2023-45624 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.2.12 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND (‘COMMAND INJECTION’) CWE-77
Multiple authenticated command injection vulnerabilities exist in the command line interface. Successful exploitation of these vulnerabilities result in the ability to execute arbitrary commands as a privileged user on the underlying operating system.
CVE-2023-45625 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
3.2.13 IMPROPER INPUT VALIDATION CWE-20
An authenticated vulnerability has been identified allowing an attacker to effectively establish highly privileged persistent arbitrary code execution across boot cycles.
CVE-2023-45626 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
3.2.14 IMPROPER INPUT VALIDATION CWE-20
An authenticated Denial-of-Service (DoS) vulnerability exists in the CLI service. Successful exploitation of this vulnerability results in the ability to interrupt the normal operation of the affected access point.
CVE-2023-45627 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Siemens ProductCERT reported these vulnerabilities to CISA.
Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.
Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.
For more information see the associated Siemens security advisory SSA-716164 in HTML and CSAF.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
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 cisa.gov. 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.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov 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.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45614
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45615
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45616
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45617
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45618
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45619
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45620
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45621
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45622
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45623
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45624
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45625
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45626
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45627
cert-portal.siemens.com/productcert/csaf/ssa-716164.json
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cwe.mitre.org/data/definitions/120.html
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