high
7.5
CWE
770
Advisory Published
Updated

CVE-2021-34568: WAGO I/O-Check Service prone to Allocation of Resources Without Limits or Throttling

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.

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 Firmware<18
WAGO 750-8202 Firmware=18
WAGO 750-8202 Firmware=18-patch_1
WAGO 750-8202 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 Ethernet Firmware<18
WAGO Ethernet Firmware=18
WAGO Ethernet Firmware=18-patch_1
WAGO Ethernet 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-2021-34568?

    CVE-2021-34568 has a severity rating that may lead to a denial of service for affected WAGO I/O-Check Service products.

  • How do I fix CVE-2021-34568?

    To fix CVE-2021-34568, update the affected WAGO firmware to versions 18-patch_1 or 18-patch_2 or later.

  • What products are affected by CVE-2021-34568?

    CVE-2021-34568 affects multiple WAGO 750-8100, 750-8101, 750-8102, and 750-8202 firmware versions below 18-patch_1.

  • Can CVE-2021-34568 be exploited remotely?

    Yes, CVE-2021-34568 can be exploited by an unauthenticated remote attacker.

  • What kind of attack can CVE-2021-34568 trigger?

    CVE-2021-34568 can trigger a denial of service attack on the affected devices.

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