PT-2022-10353 · Wago · Wago I/O-Check Service

Uri Katz · Published 2022-11-09 · Updated 2022-11-16 · CVE-2021-34566

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions WAGO I/O-Check Service (affected versions not specified)

Description The issue allows an unauthenticated remote attacker to send a specially crafted packet containing OS commands, which can cause the iocheck process to crash and result in memory writing, leading to loss of integrity and a denial-of-service (DoS) condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-34566

Affected Products

Wago I/O-Check Service

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2021-34566 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34566 · Vendor Advisory
• https://cert.vde.com/en/advisories/VDE-2020-036 · Vendor Advisory