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Advisory Published

CVE-2021-42059: Buffer Overflow

First published: Thu Feb 03 2022(Updated: )

An issue was discovered in Insyde InsydeH2O Kernel 5.0 before 05.08.41, Kernel 5.1 before 05.16.41, Kernel 5.2 before 05.26.41, Kernel 5.3 before 05.35.41, and Kernel 5.4 before 05.42.20. A stack-based buffer overflow leads toarbitrary code execution in UEFI DisplayTypeDxe DXE driver.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Insyde InsydeH2O>=5.0<5.08.41
Insyde InsydeH2O>=5.1<5.16.41
Insyde InsydeH2O>=5.2<5.26.41
Insyde InsydeH2O>=5.3<5.35.41
Insyde InsydeH2O>=5.4<5.42.20
Siemens Simatic Field Pg M5 Firmware
Siemens Simatic Field Pg M5
Siemens Simatic Field Pg M6 Firmware
Siemens Simatic Field Pg M6
Siemens Simatic Ipc127e Firmware
Siemens Simatic Ipc127e
Siemens Simatic Ipc227g Firmware
Siemens Simatic Ipc227g
Siemens Simatic Ipc277g Firmware
Siemens Simatic Ipc277g
Siemens Simatic Ipc327g Firmware
Siemens Simatic Ipc327g
Siemens Simatic Ipc377g Firmware
Siemens Simatic Ipc377g
Siemens Simatic Ipc427e Firmware
Siemens Simatic Ipc427e
Siemens Simatic Ipc477e Firmware
Siemens Simatic Ipc477e
Siemens Simatic Ipc627e Firmware
Siemens Simatic Ipc627e
Siemens Simatic Ipc647e Firmware
Siemens Simatic Ipc647e
Siemens Simatic Ipc677e Firmware
Siemens Simatic Ipc677e
Siemens Simatic Ipc847e Firmware
Siemens Simatic Ipc847e
Siemens Simatic Itp1000 Firmware
Siemens Simatic Itp1000

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Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2021-42059.

  • What is the severity of CVE-2021-42059?

    The severity of CVE-2021-42059 is high, with a severity value of 6.7.

  • Which software versions are affected by CVE-2021-42059?

    Insyde InsydeH2O Kernel versions 5.0 through 5.4 are affected by CVE-2021-42059.

  • What is the description of CVE-2021-42059?

    CVE-2021-42059 is a stack-based buffer overflow vulnerability in the UEFI DisplayTypeDxe DXE driver in Insyde InsydeH2O Kernel versions 5.0 through 5.4, which can lead to arbitrary code execution.

  • Are Siemens Simatic Field PG M5 and M6 affected by CVE-2021-42059?

    No, Siemens Simatic Field PG M5 and M6 are not affected by CVE-2021-42059.


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