PT-2021-19990 · Unknown · Drawings Sdk

Brian Gorenc · Published 2021-06-17 · Updated 2023-02-09 · CVE-2021-32944

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Drawings SDK versions prior to 2022.4

Description A use-after-free issue exists in the DGN file-reading procedure due to the lack of proper validation of user-supplied data. This can result in 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.

Recommendations For versions prior to 2022.4, update to version 2022.4 or later to resolve the issue. As a temporary workaround, consider restricting the use of the DGN file-reading procedure until a patch is available. Avoid using the Drawings SDK to parse untrusted DGN files until the issue is resolved.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2021-32944

ZDI-21-987

ZDI-21-990

ZDI-23-131

ZDI-23-132

Affected Products

Drawings Sdk

References · 13

• https://zerodayinitiative.com/advisories/ZDI-23-131 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-990 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-365397.pdf · Patch
• https://zerodayinitiative.com/advisories/ZDI-21-987 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-155599.pdf · Patch
• https://zerodayinitiative.com/advisories/ZDI-23-132 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-32944 · Security Note
• https://osv.dev/vulnerability/CVE-2021-32944 · Vendor Advisory
• https://t.me/cibsecurity/25518 · Telegram Post
• https://us-cert.cisa.gov/ics/advisories/icsa-21-159-02 · Note
• https://t.me/cvenotify/18983 · Telegram Post
• https://t.me/cvenotify/16518 · Telegram Post
• https://t.me/cvenotify/19645 · Telegram Post