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
68.4%
Successful exploitation of these vulnerabilities could cause a leak of information or allow an attacker to perform remote code execution in the context of the current process.
The following versions of Simcenter Femap, an advanced simulation application, are affected:
Affected application contains an out of bounds write past the end of an allocated structure while parsing specially crafted NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46151 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).
Affected application contains a type confusion vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46152 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).
Affected application contains a memory corruption vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46153 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).
Affected application contains a stack-based buffer overflow vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46154 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).
Affected application contains a stack-based buffer overflow vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46155 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).
Affected application contains an out-of-bounds write past the end of an allocated structure while parsing specially crafted NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46156 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).
Affected application contains a memory corruption vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46157 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).
Affected application contains a stack-based buffer overflow vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46158 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).
Affected application contains an out-of-bounds write past the end of an allocated structure while parsing specially crafted NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46159 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).
Affected application contains an out-of-bounds write past the end of an allocated structure while parsing specially crafted NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46160 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).
Affected application contains an out-of-bounds write past the end of an allocated structure while parsing specially crafted NEU files. This could allow an attacker to execute code in the context of the current process.
CVE-2021-46161 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).
Trend Micro’s Zero Day Initiative reported these vulnerabilities to Siemens.
Siemens has recommended the following:
As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security, and follow the recommendations in the product manuals.
For more information about this issue, please see Siemens’ security advisory SSA-609880
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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 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-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
These vulnerabilities are not exploitable remotely. No known public exploits specifically target these vulnerabilities,
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46151
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46152
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46153
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46154
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46155
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46156
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46157
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46158
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46159
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46160
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46161
cert-portal.siemens.com/operational-guidelines-industrial-security.pdf
cert-portal.siemens.com/productcert/pdf/ssa-609880.pdf
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-041-03
cwe.mitre.org/data/definitions/119
cwe.mitre.org/data/definitions/119
cwe.mitre.org/data/definitions/121
cwe.mitre.org/data/definitions/121
cwe.mitre.org/data/definitions/121
cwe.mitre.org/data/definitions/787
cwe.mitre.org/data/definitions/787
cwe.mitre.org/data/definitions/787
cwe.mitre.org/data/definitions/787
cwe.mitre.org/data/definitions/787
cwe.mitre.org/data/definitions/843
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.sw.siemens.com/
twitter.com/CISAgov
twitter.com/intent/tweet?text=Siemens%20Simcenter%20Femap+https://www.cisa.gov/news-events/ics-advisories/icsa-22-041-03
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/recommended-practices
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.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-22-041-03&title=Siemens%20Simcenter%20Femap
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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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
68.4%