CVE-2021-32946: Siemens JT2Go DGN File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
First published: Thu Jun 17 2021(Updated: )
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens JT2Go. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DGN files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens JT2Go | ||
| Opendesign Drawings Sdk | <=2022.4 | |
| Siemens COMOS | <10.4.1 | |
| Siemens JT2Go | <13.2.0.2 | |
| Siemens Teamcenter Visualization | <13.2.0.2 |
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Reference Links
- https://cert-portal.siemens.com/productcert/pdf/ssa-155599.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-938030.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-159-02
- https://www.zerodayinitiative.com/advisories/ZDI-21-983/
- https://www.zerodayinitiative.com/advisories/ZDI-21-985/
- https://us-cert.cisa.gov/ics/advisories/icsa-21-222-03
Frequently Asked Questions
What is CVE-2021-32946?
CVE-2021-32946 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Siemens JT2Go. User interaction is required to exploit this vulnerability.
How can this vulnerability be exploited?
This vulnerability can be exploited by visiting a malicious page or opening a malicious file.
What is the severity of CVE-2021-32946?
The severity of CVE-2021-32946 is high with a CVSS score of 7.8.
Which software products are affected by CVE-2021-32946?
Siemens JT2Go, Opendesign Drawings Sdk, Siemens COMOS, and Siemens Teamcenter Visualization are affected by CVE-2021-32946.
Where can I find more information about CVE-2021-32946?
You can find more information about CVE-2021-32946 in the references provided: [reference1](https://cert-portal.siemens.com/productcert/pdf/ssa-155599.pdf), [reference2](https://cert-portal.siemens.com/productcert/pdf/ssa-938030.pdf), [reference3](https://us-cert.cisa.gov/ics/advisories/icsa-21-159-02).
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