PT-2019-17456 · Wago · Wago Pfc 200+1

Published 2019-12-18 · Updated 2021-07-21 · CVE-2019-5074

Positive Technologies (AI Summary)

CVSS v3.1

10

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 WAGO PFC200 Firmware versions 03.00.39(12) through 03.01.07(13) WAGO PFC100 Firmware version 03.00.39(12)

Description A stack buffer overflow issue exists in the iocheckd service 'I/O-Check' functionality. This can be triggered by a specially crafted set of packets, leading to code execution. An attacker can send unauthenticated packets to exploit this issue.

Recommendations For WAGO PFC200 Firmware versions 03.00.39(12) through 03.01.07(13), update to a version that fixes the iocheckd service 'I/O-Check' functionality issue. For WAGO PFC100 Firmware version 03.00.39(12), update to a version that fixes the iocheckd service 'I/O-Check' functionality issue. As a temporary workaround, consider restricting access to the iocheckd service to minimize the risk of exploitation.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2019-5074

Affected Products

Wago Pfc100

Wago Pfc 200

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2019-5074 · Security Note
• https://osv.dev/vulnerability/CVE-2019-5074 · Vendor Advisory
• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0863 · Note