high
8.2
CWE
125
Advisory Published
Updated

CVE-2021-34567: WAGO I/O-Check Service prone to Out-of-bounds Read

First published: Wed Nov 09 2022(Updated: )

In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to provoke a denial of service and an limited out-of-bounds read.

Credit: info@cert.vde.com

Affected SoftwareAffected VersionHow to fix
WAGO 750-8100 firmware<18
WAGO 750-8100 firmware=18
WAGO 750-8100 firmware=18-patch_1
WAGO 750-8100 firmware=18-patch_2
WAGO 750-8100 firmware
WAGO 750-8101 firmware<18
WAGO 750-8101 firmware=18
WAGO 750-8101 firmware=18-patch_1
WAGO 750-8101 firmware=18-patch_2
WAGO 750-8101 firmware
WAGO 750-8101/025-000 firmware<18
WAGO 750-8101/025-000 firmware=18
WAGO 750-8101/025-000 firmware=18-patch_1
WAGO 750-8101/025-000 firmware=18-patch_2
WAGO 750-8101/025-000
WAGO Ethernet Firmware<18
WAGO Ethernet Firmware=18
WAGO Ethernet Firmware=18-patch_1
WAGO Ethernet Firmware=18-patch_2
WAGO 750-8102 firmware
WAGO 750-8102 firmware<18
WAGO 750-8102 firmware=18
WAGO 750-8102 firmware=18-patch_1
WAGO 750-8102 firmware=18-patch_2
WAGO 750-8102/025-000
WAGO 750-8202/025-002 Firmware<18
WAGO 750-8202/025-002 Firmware=18
WAGO 750-8202/025-002 Firmware=18-patch_1
WAGO 750-8202/025-002 Firmware=18-patch_2
WAGO 750-8202 Firmware
WAGO 750-8202/000-011 firmware<18
WAGO 750-8202/000-011 firmware=18
WAGO 750-8202/000-011 firmware=18-patch_1
WAGO 750-8202/000-011 firmware=18-patch_2
WAGO 750-8202/000-011
WAGO 750-8202/000-012 firmware<18
WAGO 750-8202/000-012 firmware=18
WAGO 750-8202/000-012 firmware=18-patch_1
WAGO 750-8202/000-012 firmware=18-patch_2
WAGO 750-8202
WAGO 750-8202/000-022 firmware<18
WAGO 750-8202/000-022 firmware=18
WAGO 750-8202/000-022 firmware=18-patch_1
WAGO 750-8202/000-022 firmware=18-patch_2
WAGO 750-8202
WAGO 750-8202/025-000 firmware<18
WAGO 750-8202/025-000 firmware=18
WAGO 750-8202/025-000 firmware=18-patch_1
WAGO 750-8202/025-000 firmware=18-patch_2
WAGO 750-8202/025-000
WAGO 750-8202/025-001 Firmware<18
WAGO 750-8202/025-001 Firmware=18
WAGO 750-8202/025-001 Firmware=18-patch_1
WAGO 750-8202/025-001 Firmware=18-patch_2
WAGO 750-8202/025-001
WAGO 750-8202/025-002 firmware<18
WAGO 750-8202/025-002 firmware=18
WAGO 750-8202/025-002 firmware=18-patch_1
WAGO 750-8202/025-002 firmware=18-patch_2
WAGO 750-8202/025-002
WAGO 750-8202/040-000 firmware<18
WAGO 750-8202/040-000 firmware=18
WAGO 750-8202/040-000 firmware=18-patch_1
WAGO 750-8202/040-000 firmware=18-patch_2
WAGO 750-8202/040-000
WAGO 750-8202/040-001 firmware<18
WAGO 750-8202/040-001 firmware=18
WAGO 750-8202/040-001 firmware=18-patch_1
WAGO 750-8202/040-001 firmware=18-patch_2
WAGO 750-8202/040-001
WAGO 752-8303/8000-002 firmware<18
WAGO 752-8303/8000-002 firmware=18
WAGO 752-8303/8000-002 firmware=18-patch_1
WAGO 752-8303/8000-002 firmware=18-patch_2
WAGO 752-8303/8000-002
WAGO 762-4101<18
WAGO 762-4101=18
WAGO 762-4101=18-patch_1
WAGO 762-4101=18-patch_2
WAGO 762-4101 firmware
WAGO 762-4102 firmware<18
WAGO 762-4102 firmware=18
WAGO 762-4102 firmware=18-patch_1
WAGO 762-4102 firmware=18-patch_2
WAGO 762-4102 firmware
WAGO 762-4103 firmware<18
WAGO 762-4103 firmware=18
WAGO 762-4103 firmware=18-patch_1
WAGO 762-4103 firmware=18-patch_2
WAGO 762-4103 firmware
WAGO 762-4104<18
WAGO 762-4104=18
WAGO 762-4104=18-patch_1
WAGO 762-4104=18-patch_2
WAGO 762-4104 firmware
WAGO 762-4201/8000-001 firmware<18
WAGO 762-4201/8000-001 firmware=18
WAGO 762-4201/8000-001 firmware=18-patch_1
WAGO 762-4201/8000-001 firmware=18-patch_2
WAGO 762-4201/8000-001
WAGO 762-4202/8000-001 firmware<18
WAGO 762-4202/8000-001 firmware=18
WAGO 762-4202/8000-001 firmware=18-patch_1
WAGO 762-4202/8000-001 firmware=18-patch_2
WAGO 762-4202/8000-001
WAGO 762-4203/8000-001 firmware<18
WAGO 762-4203/8000-001 firmware=18
WAGO 762-4203/8000-001 firmware=18-patch_1
WAGO 762-4203/8000-001 firmware=18-patch_2
WAGO 762-4203/8000-001
WAGO 762-4204/8000-001 firmware<18
WAGO 762-4204/8000-001 firmware=18
WAGO 762-4204/8000-001 firmware=18-patch_1
WAGO 762-4204/8000-001 firmware=18-patch_2
WAGO 762-4204/8000-001
WAGO 762-4205/8000-001 firmware<18
WAGO 762-4205/8000-001 firmware=18
WAGO 762-4205/8000-001 firmware=18-patch_1
WAGO 762-4205/8000-001 firmware=18-patch_2
WAGO 762-4205/8000-001
WAGO 762-4205/8000-002 firmware<18
WAGO 762-4205/8000-002 firmware=18
WAGO 762-4205/8000-002 firmware=18-patch_1
WAGO 762-4205/8000-002 firmware=18-patch_2
WAGO 762-4205/8000-002
WAGO 762-4206/8000-001 firmware<18
WAGO 762-4206/8000-001 firmware=18
WAGO 762-4206/8000-001 firmware=18-patch_1
WAGO 762-4206/8000-001 firmware=18-patch_2
WAGO 762-4206/8000-001
WAGO 762-4206/8000-002 firmware<18
WAGO 762-4206/8000-002 firmware=18
WAGO 762-4206/8000-002 firmware=18-patch_1
WAGO 762-4206/8000-002 firmware=18-patch_2
WAGO 762-4206/8000-002
WAGO 762-4301/8000-002 firmware<18
WAGO 762-4301/8000-002 firmware=18
WAGO 762-4301/8000-002 firmware=18-patch_1
WAGO 762-4301/8000-002 firmware=18-patch_2
WAGO 762-4301/8000-002
WAGO 762-4302/8000-002 firmware<18
WAGO 762-4302/8000-002 firmware=18
WAGO 762-4302/8000-002 firmware=18-patch_1
WAGO 762-4302/8000-002 firmware=18-patch_2
WAGO 762-4302/8000-002
WAGO 762-4303/8000-002 firmware<18
WAGO 762-4303/8000-002 firmware=18
WAGO 762-4303/8000-002 firmware=18-patch_1
WAGO 762-4303/8000-002 firmware=18-patch_2
WAGO 762-4303/8000-002
WAGO 762-4304/8000-002 firmware<18
WAGO 762-4304/8000-002 firmware=18
WAGO 762-4304/8000-002 firmware=18-patch_1
WAGO 762-4304/8000-002 firmware=18-patch_2
WAGO 762-4304/8000-002
WAGO 762-4305/8000-002 firmware<18
WAGO 762-4305/8000-002 firmware=18
WAGO 762-4305/8000-002 firmware=18-patch_1
WAGO 762-4305/8000-002 firmware=18-patch_2
WAGO 762-4305/8000-002
WAGO 762-4306/8000-002 firmware<18
WAGO 762-4306/8000-002 firmware=18
WAGO 762-4306/8000-002 firmware=18-patch_1
WAGO 762-4306/8000-002 firmware=18-patch_2
WAGO 762-4306/8000-002
WAGO 762-5203/8000-001 firmware<18
WAGO 762-5203/8000-001 firmware=18
WAGO 762-5203/8000-001 firmware=18-patch_1
WAGO 762-5203/8000-001 firmware=18-patch_2
WAGO 762-5203/8000-001
WAGO 762-5204/8000-001 firmware<18
WAGO 762-5204/8000-001 firmware=18
WAGO 762-5204/8000-001 firmware=18-patch_1
WAGO 762-5204/8000-001 firmware=18-patch_2
WAGO 762-5204/8000-001
WAGO 762-5205/8000-001 firmware<18
WAGO 762-5205/8000-001 firmware=18
WAGO 762-5205/8000-001 firmware=18-patch_1
WAGO 762-5205/8000-001 firmware=18-patch_2
WAGO 762-5205/8000-001
WAGO 762-5206/8000-001 firmware<18
WAGO 762-5206/8000-001 firmware=18
WAGO 762-5206/8000-001 firmware=18-patch_1
WAGO 762-5206/8000-001 firmware=18-patch_2
WAGO 762-5206/8000-001
WAGO 762-5303/8000-002 firmware<18
WAGO 762-5303/8000-002 firmware=18
WAGO 762-5303/8000-002 firmware=18-patch_1
WAGO 762-5303/8000-002 firmware=18-patch_2
WAGO 762-5303/8000-002
WAGO 762-5304/8000-002 firmware<18
WAGO 762-5304/8000-002 firmware=18
WAGO 762-5304/8000-002 firmware=18-patch_1
WAGO 762-5304/8000-002 firmware=18-patch_2
WAGO 762-5304/8000-002
WAGO 762-5305/8000-002 firmware<18
WAGO 762-5305/8000-002 firmware=18
WAGO 762-5305/8000-002 firmware=18-patch_1
WAGO 762-5305/8000-002 firmware=18-patch_2
WAGO 762-5305/8000-002
WAGO 762-5306/8000-002 firmware<18
WAGO 762-5306/8000-002 firmware=18
WAGO 762-5306/8000-002 firmware=18-patch_1
WAGO 762-5306/8000-002 firmware=18-patch_2
WAGO 762-5306/8000-002
WAGO 762-6201/8000-001 firmware<18
WAGO 762-6201/8000-001 firmware=18
WAGO 762-6201/8000-001 firmware=18-patch_1
WAGO 762-6201/8000-001 firmware=18-patch_2
WAGO 762-6201/8000-001
WAGO 762-6202/8000-001 firmware<18
WAGO 762-6202/8000-001 firmware=18
WAGO 762-6202/8000-001 firmware=18-patch_1
WAGO 762-6202/8000-001 firmware=18-patch_2
WAGO 762-6202/8000-001
WAGO 762-6203/8000-001 firmware<18
WAGO 762-6203/8000-001 firmware=18
WAGO 762-6203/8000-001 firmware=18-patch_1
WAGO 762-6203/8000-001 firmware=18-patch_2
WAGO 762-6203/8000-001
WAGO 762-6204/8000-001 firmware<18
WAGO 762-6204/8000-001 firmware=18
WAGO 762-6204/8000-001 firmware=18-patch_1
WAGO 762-6204/8000-001 firmware=18-patch_2
WAGO 762-6204/8000-001
WAGO 762-6301/8000-002 firmware<18
WAGO 762-6301/8000-002 firmware=18
WAGO 762-6301/8000-002 firmware=18-patch_1
WAGO 762-6301/8000-002 firmware=18-patch_2
WAGO 762-6301/8000-002
WAGO 762-6302/8000-002 firmware<18
WAGO 762-6302/8000-002 firmware=18
WAGO 762-6302/8000-002 firmware=18-patch_1
WAGO 762-6302/8000-002 firmware=18-patch_2
WAGO 762-6302/8000-002
WAGO 762-6303/8000-002 firmware<18
WAGO 762-6303/8000-002 firmware=18
WAGO 762-6303/8000-002 firmware=18-patch_1
WAGO 762-6303/8000-002 firmware=18-patch_2
WAGO 762-6303/8000-002
WAGO 762-6304/8000-002 firmware<18
WAGO 762-6304/8000-002 firmware=18
WAGO 762-6304/8000-002 firmware=18-patch_1
WAGO 762-6304/8000-002 firmware=18-patch_2
WAGO 762-6304/8000-002

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-34567?

    CVE-2021-34567 has been assessed as a medium severity vulnerability due to its potential for denial of service and limited information disclosure.

  • How do I fix CVE-2021-34567?

    To remediate CVE-2021-34567, update the WAGO I/O-Check Service firmware to the latest version that addresses this vulnerability.

  • Which WAGO products are affected by CVE-2021-34567?

    CVE-2021-34567 affects WAGO 750-8100, 750-8101, 750-8202 and other related models running specific firmware versions.

  • Is CVE-2021-34567 a local or remote vulnerability?

    CVE-2021-34567 is classified as a remote vulnerability, allowing unauthenticated attackers access via specially crafted packets.

  • What types of attacks can CVE-2021-34567 facilitate?

    CVE-2021-34567 can facilitate denial of service attacks and lead to limited out-of-bounds read vulnerabilities.

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