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

Published Nov 9, 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.

Affected Software

245 affected components
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
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
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 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
WAGO 750-8102\/025-000 Firmware<18
WAGO 750-8102\/025-000 Firmware=18
WAGO 750-8102\/025-000 Firmware=18-patch_1
WAGO 750-8102\/025-000 Firmware=18-patch_2
WAGO 750-8102\/025-000
WAGO 750-8202 Firmware<18
WAGO 750-8202 Firmware=18
WAGO 750-8202 Firmware=18-patch_1
WAGO 750-8202 Firmware=18-patch_2
WAGO 750-8202
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\/000-012
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\/000-022
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 Firmware<18
WAGO 762-4101 Firmware=18
WAGO 762-4101 Firmware=18-patch_1
WAGO 762-4101 Firmware=18-patch_2
WAGO 762-4101
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
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
WAGO 762-4104 Firmware<18
WAGO 762-4104 Firmware=18
WAGO 762-4104 Firmware=18-patch_1
WAGO 762-4104 Firmware=18-patch_2
WAGO 762-4104
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

Event History

Nov 9, 2022
CVE Published
via MITRE·03:17 PM
Data Sourced
via MITRE·03:17 PM
DescriptionSeverityWeakness

Frequently Asked Questions

1

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.

2

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.

3

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.

4

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.

5

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.

Company

Resources

Contact

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