CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
21.4%
Successful exploitation of these vulnerabilities could allow an attacker to trick a user to open a malicious file (crafted as CGM, TIFF or TG4) with any of the affected products, which could lead the application to crash or to arbitrary code execution.
The following Siemens products are affected:
The Tiff_Loader.dll is vulnerable to infinite loop condition while parsing specially crafted TIFF files. An attacker could leverage this vulnerability to crash the application and cause a denial-of-service condition.
CVE-2022-29028 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
The CGM_NIST_Loader.dll contains a null pointer dereference vulnerability while parsing specially crafted CGM files. An attacker could leverage this vulnerability to crash the application and cause a denial-of-service condition.
CVE-2022-29029 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
The Mono_Loader.dll library is vulnerable to integer overflow condition while parsing specially crafted TG4 files. An attacker could leverage this vulnerability to crash the application and cause a denial-of-service condition.
CVE-2022-29030 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code.
CVE-2022-29031 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
The CGM_NIST_Loader.dll library contains a double free vulnerability while parsing specially crafted CGM files. An attacker could leverage this vulnerability to execute code in the context of the current process.
CVE-2022-29032 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
The CGM_NIST_Loader.dll library is vulnerable to uninitialized pointer free while parsing specially crafted CGM files. An attacker could leverage this vulnerability to execute code in the context of the current process.
CVE-2022-29033 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Jin Huang, of ADLab of Venustech, reported these vulnerabilities to CISA.
Siemens recommends updating its software to the latest version:
Siemens has identified the following workarounds and mitigations users can apply to reduce the 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 Siemensβ operational guidelines for industrial security and following recommendations in the product manuals.
For additional information, please refer to Siemens Security Advisory SSA-553086
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.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 cisa.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.
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 not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-29028
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-29029
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-29030
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-29031
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-29032
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-29033
cert-portal.siemens.com/productcert/pdf/ssa-553086.pdf
cisa.gov/ics
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cwe.mitre.org/data/definitions/415.html
cwe.mitre.org/data/definitions/476.html
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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.cisa.gov/uscert/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
21.4%