PT-2020-11063 · Wago · Wago Pfc 200+1

Kelly Leuschner · Published 2020-01-08 · Updated 2020-01-22 · CVE-2019-5082

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

Description A heap buffer overflow issue exists in the iocheckd service I/O-Check functionality. This can be triggered by a specially crafted set of packets, potentially allowing code execution. The vulnerability can be exploited by sending unauthenticated packets.

Recommendations For WAGO PFC200 Firmware version 03.01.07(13), update to a version that fixes the iocheckd service I/O-Check functionality issue. For WAGO PFC200 Firmware version 03.00.39(12), 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.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2019-5082

Affected Products

Wago Pfc100

Wago Pfc 200

References · 3

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2019-0874 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-5082 · Security Note
• https://osv.dev/vulnerability/CVE-2019-5082 · Vendor Advisory