high
7.2
CWE
20
Advisory Published
Updated

CVE-2020-27339: Input Validation

First published: Wed Jun 16 2021(Updated: )

In the kernel in Insyde InsydeH2O 5.x, certain SMM drivers did not correctly validate the CommBuffer and CommBufferSize parameters, allowing callers to corrupt either the firmware or the OS memory. The fixed versions for this issue in the AhciBusDxe, IdeBusDxe, NvmExpressDxe, SdHostDriverDxe, and SdMmcDeviceDxe drivers are 05.16.25, 05.26.25, 05.35.25, 05.43.25, and 05.51.25 (for Kernel 5.1 through 5.5).

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Insyde InsydeH2O>=5.3<5.34.44
Insyde InsydeH2O>=5.2<5.25.44
Insyde InsydeH2O>=5.1<5.16.25
Insyde InsydeH2O>=5.4<5.42.44
Insyde InsydeH2O>=5.3<5.35.25
Insyde InsydeH2O>=5.2<5.26.25
Insyde InsydeH2O>=5.4<5.43.25
Siemens Ruggedcom Apr1808 Firmware
Siemens Ruggedcom Apr1808
Siemens Simatic Field Pg M5 Firmware
Siemens Simatic Field Pg M5
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Siemens Simatic Field Pg M6
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Siemens Simatic Ipc477e Pro Firmware
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Siemens Simatic Itp1000 Firmware
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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-27339?

    The severity of CVE-2020-27339 is high.

  • What is the affected software for CVE-2020-27339?

    The affected software for CVE-2020-27339 is Insyde InsydeH2O 5.x.

  • How does CVE-2020-27339 impact Insyde InsydeH2O 5.x?

    CVE-2020-27339 can allow callers to corrupt either the firmware or the OS memory.

  • Are there any fixed versions for CVE-2020-27339?

    Yes, the fixed versions for CVE-2020-27339 are available for the AhciBusDxe, IdeBusDxe, NvmExpressDxe, SdHostDriverDxe, and Sd.

  • Where can I find more information about CVE-2020-27339?

    You can find more information about CVE-2020-27339 in the references provided: [Reference 1](https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf), [Reference 2](https://security.netapp.com/advisory/ntap-20220216-0005/), [Reference 3](https://www.insyde.com/security-pledge/SA-2021001).

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