Siemens Simcenter Femap and Parasolid

1. EXECUTIVE SUMMARY

• CVSS v3 7.8 *ATTENTION: Low attack complexity
• **Vendor:**Siemens
• Equipment: Simcenter Femap and Parasolid
• Vulnerabilities: Multiple File Parsing Vulnerabilities

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could result in remote code execution in the compromised process.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports these vulnerabilities as affecting the following products:

• Parasolid, a 3D geometric modeling tool
  • Version V33.1
    • All versions prior to V33.1.262
    • Versions V33.1.262 up to V33.1.263; only affected by CVE-2022-39156, CVE-2022- 39155, CVE-2022-39154, CVE-2022-39153, CVE-2022-39152, CVE-2022-39151, CVE-2022- 39150, CVE-2022-39149, CVE-2022-39148, CVE-2022-39147, CVE-2022-39146, CVE-2022- 39145, CVE-2022-39144, CVE-2022-39143, CVE-2022-39142
  • Version V34.0
    • All versions prior to V34.0.252
  • Version V34.1
    • All versions prior to V34.1.242
  • Version V35.0
    • All versions prior to V35.0.161
    • Versions V35.0.161 up to V35.0.164; only affected by CVE-2022-39156, CVE-2022- 39155, CVE-2022-39154, CVE-2022-39153, CVE-2022-39152, CVE-2022-39151, CVE-2022- 39150, CVE-2022-39149, CVE-2022-39148, CVE-2022-39147, CVE-2022-39146, CVE-2022- 39145, CVE-2022-39144, CVE-2022-39143, CVE-2022-39142
• Simcenter Femap, a modeling and simulation software
  • V2022.1
    • All versions prior to V2022.1.3
  • V2022.2
    • All versions prior to V2022.2.2

3.2 VULNERABILITY OVERVIEW

3.2.1 OUT-OF-BOUNDS READ CWE-125

The affected application is vulnerable to out-of-bounds read past the end of an allocated buffer when parsing X_T files. An attacker could leverage this vulnerability to leak information in the context of the current process.

CVE-2022-39137 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:L/I:N/A:N).

3.2.2 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39138 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).

3.2.3 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39139 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).

3.2.4 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39140 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).

3.2.5 OUT-OF-BOUNDS READ CWE-125

The affected application contains an out-of-bounds read past the end of an allocated buffer while parsing X_T files. An attacker could leverage this vulnerability to leak information in the context of the current process.

CVE-2022-39141 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:L/I:N/A:N).

3.2.6 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39142 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).

3.2.7 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39143 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).

3.2.8 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39144 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).

3.2.9 OUT-OF-BOUNDS READ CWE-125

The affected application is vulnerable to out-of-bounds read past the end of an allocated buffer when parsing X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39145 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).

3.2.10 ACCESS OF UNINITIALIZED POINTER CWE-824

The affected application is vulnerable to uninitialized pointer access while parsing specially crafted X_T files. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2022-39146 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).

3.2.11 ACCESS OF UNINITIALIZED POINTER CWE-824

The affected application is vulnerable to uninitialized pointer access while parsing specially crafted X_T files. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2022-39147 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).

3.2.12 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39148 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).

3.2.13 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39149 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).

3.2.14 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39150 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).

3.2.15 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39151 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).

3.2.16 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39152 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).

3.2.17 OUT-OF-BOUNDS READ CWE-125

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39153 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).

3.2.18 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39154 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).

3.2.19 OUT-OF-BOUNDS WRITE CWE-787

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39155 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).

3.2.20 OUT-OF-BOUNDS READ CWE-125

The affected application contains an out-of-bounds write past the end of an allocated buffer while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.

CVE-2022-39156 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).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Trend Micro Zero Day Initiative reported these vulnerabilities to Siemens and CISA.

4. MITIGATIONS

Siemens recommends users update their products to the latest versions:

• Parasolid 3D geometric modeling tool
  • Version V33.1
    • Update to Version V33.1.263 or later
  • Version V34.0
    • Update to Version V34.0.252 or later
  • Version V34.1
    • Update to Version V34.1.242 or later
  • Version V35.0
    • Update to Version V35.0.164 or later
• Simcenter Femap, a modeling and simulation software
  • V2022.1
    • Update to Version V2022.1.3 or later
  • V2022.2
    • Update to Version V2022.2.2 or later

Siemens also reminds users not to open untrusted X_T files in Simcenter Femap or Parasolid.

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 in HTML or CSAF formats.

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.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

• Do not click web links or open attachments in unsolicited email messages.
• Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
• Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.