PT-2021-20455 · Jt981.Dll+2 · Jt981.Dll+2

Mat Powell · Published 2021-07-13 · Updated 2021-07-27 · CVE-2021-34324

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: JT2Go versions prior to V13.2 Teamcenter Visualization versions prior to V13.2

Description: A vulnerability has been identified in the Jt981.dll library, which lacks proper validation of user-supplied data when parsing JT files. This allows an attacker to execute code in the context of the current process by leveraging a use-after-free vulnerability.

Recommendations: For JT2Go versions prior to V13.2, update to version V13.2 or later to resolve the issue. For Teamcenter Visualization versions prior to V13.2, update to version V13.2 or later to resolve the issue. As a temporary workaround, consider restricting the use of the Jt981.dll library until a patch is available.

Fix

Use After Free

RCE

Weakness Enumeration

CWE-416

CWE-20

Related Identifiers

CVE-2021-34324

ZDI-21-862

Affected Products

Jt2Go

Jt981.Dll

Teamcenter Visualization

References · 4

• https://osv.dev/vulnerability/CVE-2021-34324 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-862 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34324 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf · Vendor Advisory