CVE-2021-34566: WAGO I/O-Check Service prone to Memory Overflow

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 crash the iocheck process and write memory resulting in loss of integrity and DoS.

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-2021-34566?

CVE-2021-34566 is considered critical due to its potential to allow unauthenticated remote attackers to crash the affected WAGO I/O-Check Service.

2

How do I fix CVE-2021-34566?

To mitigate CVE-2021-34566, it is recommended to apply the latest firmware updates provided by WAGO.

3

Can CVE-2021-34566 be exploited remotely?

Yes, CVE-2021-34566 can be exploited remotely without authentication by sending specially crafted packets.

4

What affected products are involved in CVE-2021-34566?

CVE-2021-34566 affects various WAGO I/O-Check Service products, including firmware versions up to 18.

5

What damage can CVE-2021-34566 cause?

Exploitation of CVE-2021-34566 can lead to denial of service and loss of integrity in the affected systems.

Company

Resources

Contact

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