CVE-2021-34326: Siemens JT2Go PAR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
First published: Tue Jul 13 2021(Updated: )
A vulnerability has been identified in JT2Go (All versions < V13.2), Solid Edge SE2021 (All Versions < SE2021MP5), Teamcenter Visualization (All versions < V13.2). The plmxmlAdapterSE70.dll library in affected applications lacks proper validation of user-supplied data when parsing PAR files. This could result in an out of bounds write past the fixed-length heap-based buffer. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13422)
Credit: productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens JT2Go | <13.2.0 | |
| Siemens Solid Edge | <se2021 | |
| Siemens Solid Edge | =se2021 | |
| Siemens Solid Edge | =se2021-maintenance_pack1 | |
| Siemens Solid Edge | =se2021-maintenance_pack2 | |
| Siemens Solid Edge | =se2021-maintenance_pack3 | |
| Siemens Solid Edge | =se2021-maintenance_pack4 | |
| Siemens Teamcenter Visualization | <13.2.0 | |
| Siemens JT2Go | <13.2 | 13.2 |
| Siemens Teamcenter Visualization | <13.2 | 13.2 |
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Reference Links
- https://us-cert.cisa.gov/ics/advisories/icsa-21-194-15
- https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf
- https://www.zerodayinitiative.com/advisories/ZDI-21-864/
- https://cert-portal.siemens.com/productcert/pdf/ssa-173615.pdf
- https://www.cisa.gov/news-events/ics-advisories/icsa-21-194-15 (Advisory)
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-34326.
What is the title of the vulnerability?
The title of the vulnerability is Siemens JT2Go PAR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability.
How does this vulnerability allow attackers to execute arbitrary code?
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens JT2Go.
What is required for the vulnerability to be exploited?
User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
What is the severity of CVE-2021-34326?
The severity of CVE-2021-34326 is high with a CVSS score of 7.8.
What software are affected by this vulnerability?
Siemens JT2Go, Siemens Solid Edge, and Siemens Teamcenter Visualization versions up to 13.2.0 and se2021 with maintenance packs 1, 2, 3, and 4 are affected.
Where can I find more information about this vulnerability?
You can find more information about this vulnerability at the following references: [US-CERT](https://us-cert.cisa.gov/ics/advisories/icsa-21-194-15), [Siemens Product Cert](https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf), [Zero Day Initiative](https://www.zerodayinitiative.com/advisories/ZDI-21-864/).
What are the Common Weakness Enumerations (CWEs) associated with this vulnerability?
The Common Weakness Enumerations (CWEs) associated with this vulnerability are CWE-787 and CWE-122.
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- agent/event
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- canonical/siemens jt2go
- canonical/siemens solid edge
- version/siemens solid edge/se2021
- version/siemens solid edge/se2021-maintenance_pack1
- version/siemens solid edge/se2021-maintenance_pack2
- version/siemens solid edge/se2021-maintenance_pack3
- version/siemens solid edge/se2021-maintenance_pack4
- canonical/siemens teamcenter visualization