Home/CVE/A use-after-free issue exists in the DGN file-reading procedure in the Drawings SDK (All versions prior to 2022.4) resul
CVE

CVE-2021-32944

A use-after-free issue exists in the DGN file-reading procedure in the Drawings SDK (All versions prior to 2022.4) resul

A use-after-free issue exists in the DGN file-reading procedure in the Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a memory corruption or arbitrary code execution, allowing attackers to cause a denial-of-service condition or execute code in the context of the current process.

HIGH · CVSS 7.8 EPSS 0.0033
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

4
opendesign drawings sdk< 2022.4
siemens comos< 10.4.1
siemens jt2go< 13.2.0.1
siemens teamcenter visualization< 13.2.0.1
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · ics-cert@hq.dhs.gov
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Jun 2021 · 01:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

5
siemens-csafSSA-155599
siemens-csafSSA-365397
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-159-02
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-222-01
cisa-csafcisa-csaf-csaf_files-OT-white-2022-icsa-22-069-06
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-155599.pdfPatchThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-365397.pdfPatchThird Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-02Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-987/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-990/Third Party AdvisoryVDB Entry
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