Lucene search

K
icsIndustrial Control Systems Cyber Emergency Response TeamICSA-21-040-06
HistoryMay 27, 2021 - 12:00 p.m.

Siemens JT2Go and Teamcenter Visualization (Update A)

2021-05-2712:00:00
Industrial Control Systems Cyber Emergency Response Team
www.cisa.gov
242

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.4 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.011 Low

EPSS

Percentile

84.3%

1. EXECUTIVE SUMMARY

  • CVSS v3 7.8 ***ATTENTION: **Low attack complexity
  • **Vendor:**Siemens
  • **Equipment:**JT2Go and Teamcenter Visualization
  • **Vulnerabilities:**Out-of-bounds Read, Improper Restriction of Operations within the Bounds of a Memory Buffer, Stack-based Buffer overflow, Out-of-Bounds Write, Type Confusion, Untrusted Pointer Dereference, Incorrect Type Conversion or Cast

2. UPDATE INFORMATION

This updated advisory is a follow-up to the original advisory titled Siemens JT2Go and Teamcenter Visualization that was published February 9, 2021, to the ICS webpage on us-cert.cisa.gov.

3. RISK EVALUATION

Successful exploitation of these vulnerabilities could lead to arbitrary code execution.

4. TECHNICAL DETAILS

4.1 AFFECTED PRODUCTS

The following products are affected:

  • JT2Go: All versions prior to v13.1.0.1
  • Teamcenter Visualization: All versions prior to v13.1.0.1

4.2 VULNERABILITY OVERVIEW

--------- Begin Update A Part 1 of 1 ---------

CVE-2020-26998, CVE-2020-26999, CVE-2020-27001, CVE-2020-27002, and CVE-2020-26991 were moved to SSA-695540 and ICSA-21-147-04

4.2.1 STACK-BASED BUFFER OVERFLOW CWE-121

Affected applications lack proper validation of user-supplied data when parsing PAR files. This could result in an out-of-bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-26989 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).

4.2.2 ACCESS OF RESOURCE USING INCOMPATIBLE TYPE (‘TYPE CONFUSION’) CWE-843

Affected applications lack proper validation of user-supplied data when parsing ASM files. A crafted ASM file can trigger a type of confusion condition. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-26990 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).

4.2.3 OUT-OF-BOUNDS WRITE CWE-787

Affected applications lack proper validation of user-supplied data when parsing PAR files. This can result in an out-of-bounds write past the memory location that is a read-only image address. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-28383 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).

4.2.4 OUT-OF-BOUNDS WRITE CWE-787

An out-of-bounds write vulnerability exists in the file-reading procedure in Open Design Alliance Drawings SDK before 2021.6. This could allow an attacker to cause a crash, potentially enabling a denial-of-service attack (crash, exit, or restart) or code execution.

CVE-2021-31784 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).

--------- End Update A Part 1 of 1 ---------

4.2.5 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119

Affected applications lack proper validation of user-supplied data when parsing BMP files. This can result in a memory-corruption condition. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-27000 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).

4.2.6 UNTRUSTED POINTER DEREFERENCE CWE-822

Affected applications lack proper validation of user-supplied data when parsing TIFF files. This could lead to pointer dereferences of a value obtained from untrusted source. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-27003 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).

4.2.7 OUT-OF-BOUNDS READ CWE-125

Affected applications lack proper validation of user-supplied data when parsing CGM files. This could result in a memory access past the end of an allocated buffer. An attacker could leverage this vulnerability to access data in the context of the current process.

CVE-2020-27004 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).

4.2.8 OUT-OF-BOUNDS WRITE CWE-787

Affected applications lack proper validation of user-supplied data when parsing TGA files. This could result in an out-of-bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-27005 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).

4.2.9 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119

Affected applications lack proper validation of user-supplied data when parsing PCT files. This could result in a memory-corruption condition. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-27006 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).

4.2.10 OUT-OF-BOUNDS READ CWE-125

Affected applications lack proper validation of user-supplied data when parsing HPG files. This could result in a memory access past the end of an allocated buffer. An attacker could leverage this vulnerability to access data in the context of the current process.

CVE-2020-27007 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).

4.2.11 OUT-OF-BOUNDS READ CWE-125

Affected applications lack proper validation of user-supplied data when parsing PLT files. This could result in a memory access past the end of an allocated buffer. An attacker could leverage this vulnerability to access data in the context of the current process.

CVE-2020-27008 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).

4.2.12 OUT-OF-BOUNDS READ CWE-125

Affected applications lack proper validation of user-supplied data when parsing RAS files. This could result in a memory access past the end of an allocated buffer. An attacker could leverage this vulnerability to access data in the context of the current process.

CVE-2020-28394 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).

4.2.13 STACK-BASED BUFFER OVERFLOW CWE-121

Affected applications lack proper validation of user-supplied data when parsing PAR files. This could result in an out-of-bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2020-26989 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).

4.2.14 ACCESS OF RESOURCE USING INCOMPATIBLE TYPE (‘TYPE CONFUSION’) CWE-843

Affected applications lack proper validation of user-supplied data when parsing ASM files. A crafted ASM file can trigger a type-confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

CVE-2020-26990 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).

4.2.15 STACK-BASED BUFFER OVERFLOW CWE-121

An issue was discovered in Open Design Alliance Drawings SDK before v2021.11. A stack-based buffer overflow vulnerability exists when the recover operation is run with malformed DXF and DWG files.

CVE-2021-25178 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).

4.2.16 ACCESS OF RESOURCE USING INCOMPATIBLE TYPE (‘TYPE CONFUSION’) CWE-843

An issue was discovered in Open Design Alliance Drawings SDK before v2021.11. A type-confusion issue exists when rendering malformed DXF and DWG files.

CVE-2021-25177 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).

4.2.17 UNTRUSTED POINTER DEREFERENCE CWE-822

An issue was discovered in Open Design Alliance Drawings SDK before v2021.11. A NULL pointer dereference exists when rendering malformed DXF and DWG files. This could allow attackers to cause a crash, potentially enabling a denial-of-service attack (crash, exit, or restart).

CVE-2021-25176 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).

4.2.18 INCORRECT TYPE CONVERSION OR CAST CWE-704

An issue was discovered in Open Design Alliance Drawings SDK before v2021.11. A type conversion issue exists when rendering malformed DXF and DWG files. This could allow attackers to cause a crash, potentially enabling a denial-of-service attack (crash, exit, or restart).

CVE-2021-25175 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).

4.2.19 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119

An issue was discovered in Open Design Alliance Drawings SDK before v2021.12. A memory corruption vulnerability exists when reading malformed DGN files. This could allow attackers to cause a crash, enabling a denial-of-service condition (crash, exit, or restart).

CVE-2021-25174 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).

4.2.20 MEMORY ALLOCATION WITH EXCESSIVE SIZE VALUE CWE-789

An issue was discovered in Open Design Alliance Drawings SDK before v2021.12. A memory allocation with excessive size vulnerability exists when reading malformed DGN files, which could allow attackers to cause a crash, enabling a denial-of-service condition (crash, exit, or restart).

CVE-2021-25173 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).

4.3 BACKGROUND

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

4.4 RESEARCHER

Michael DePlante (@izobashi), Francis Provencher {PRL}, and rgod, working with Trend Micro’s Zero Day Initiative, reported these vulnerabilities to CISA.

5. MITIGATIONS

Siemens recommends the following:

Siemens strongly 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 follow the recommendations in the product manuals.

Additional information on industrial security by Siemens can be found at: <https://www.siemens.com/Industrialsecurity&gt;

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

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 us-cert.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 us-cert.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.

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

References

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.4 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.011 Low

EPSS

Percentile

84.3%

Related for ICSA-21-040-06