PT-2021-23826 · Open Design Alliance · Open Design Alliance Drawings Sdk

Xina1I · Published 2021-11-14 · Updated 2023-03-01 · CVE-2021-43391

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 Open Design Alliance Drawings SDK versions prior to 2022.11

Description The issue exists within the parsing of DXF files, where crafted data can trigger a read past the end of an allocated buffer, allowing an attacker to execute code in the context of the current process. The specific problem is caused by an invalid dash counter in line types.

Recommendations For versions prior to 2022.11, update to a version 2022.11 or later to resolve the issue. As a temporary workaround, consider restricting the use of DXF files from untrusted sources until a patch is available. Avoid using the Drawings SDK to parse potentially crafted DXF files until the issue is resolved.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-43391

ZDI-21-1352

ZDI-21-1361

ZDI-23-137

ZDI-23-211

Affected Products

Open Design Alliance Drawings Sdk

References · 11

• https://opendesign.com/security-advisories · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1352 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-23-211 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-1361 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-43391 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-23-137 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43391 · Vendor Advisory
• https://t.me/cvenotify/23391 · Telegram Post
• https://t.me/cibsecurity/32382 · Telegram Post
• https://cert-portal.siemens.com/productcert/pdf/ssa-491245.pdf · Note
• https://t.me/cvenotify/23925 · Telegram Post