PT-2021-20022 · Advantech · Advantech Webaccess

Natnael Samson + 1 · Published 2021-10-18 · Updated 2022-02-02 · CVE-2021-33023

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Advantech WebAccess versions 9.02 and prior

Description The issue is a heap-based buffer overflow that may allow an attacker to remotely execute code.

Recommendations For Advantech WebAccess versions 9.02 and prior, update to a version later than 9.02 to resolve the issue.

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

CVE-2021-33023

ZDI-22-257

ZDI-22-258

Affected Products

Advantech Webaccess

References · 6

• https://osv.dev/vulnerability/CVE-2021-33023 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-22-257 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-22-258 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-33023 · Security Note
• https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02 · Note
• https://t.me/cibsecurity/30683 · Telegram Post