CVE-2020-27339
Medium
Description
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).
SeverityMedium
CVSS6.7
Exploit probability—
ProductInsydeh2o
PublishedJun 16, 2021
First seenJun 16, 2021
How to fix
Update
- insyde insydeh2o5.34.44, 5.25.44, 5.16.25, 5.42.44, 5.35.25, 5.26.25, 5.43.25 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| insyde insydeh2o | 5.3 ≤ v < 5.34.44, 5.2 ≤ v < 5.25.44, 5.1 ≤ v < 5.16.25, 5.4 ≤ v < 5.42.44, 5.3 ≤ v < 5.35.25, 5.2 ≤ v < 5.26.25, 5.4 ≤ v < 5.43.25 | 5.34.44, 5.25.44, 5.16.25, 5.42.44, 5.35.25, 5.26.25, 5.43.25 |
| siemens ruggedcom_apr1808_firmware | No range specified | — |
| siemens simatic_field_pg_m5_firmware | No range specified | — |
| siemens simatic_field_pg_m6_firmware | No range specified | — |
| siemens simatic_ipc127e_firmware | No range specified | — |
| siemens simatic_ipc227g_firmware | No range specified | — |
| siemens simatic_ipc277g_firmware | No range specified | — |
| siemens simatic_ipc327g_firmware | No range specified | — |
| siemens simatic_ipc377g_firmware | No range specified | — |
| siemens simatic_ipc427e_firmware | No range specified | — |
| siemens simatic_ipc477e_firmware | No range specified | — |
| siemens simatic_ipc477e_pro_firmware | No range specified | — |
| siemens simatic_ipc627e_firmware | No range specified | — |
| siemens simatic_ipc647e_firmware | No range specified | — |
| siemens simatic_ipc677e_firmware | No range specified | — |
| siemens simatic_ipc847e_firmware | No range specified | — |
| siemens simatic_itp1000_firmware | No range specified | — |
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