PT-2021-11358 · Unknown · Opc Ua Tunneller

Published 2021-01-26 · Updated 2021-02-03 · CVE-2020-27274

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: OPC UA Tunneller versions prior to 6.3.0.8233

Description: The issue arises from some parsing functions in the affected product not checking the return value of malloc, which can force the thread handling the message to close. This may lead to a denial-of-service condition.

Recommendations: For versions prior to 6.3.0.8233, update to version 6.3.0.8233 or later to resolve the issue. As a temporary workaround, consider implementing additional error checking for malloc return values to prevent thread closure.

Fix

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

CVE-2020-27274

Affected Products

Opc Ua Tunneller

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-27274 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27274 · Vendor Advisory
• https://t.me/cvenotify/8979 · Telegram Post
• https://t.me/cibsecurity/22670 · Telegram Post
• https://us-cert.cisa.gov/ics/advisories/icsa-21-021-03 · Note