CVE-2020-27339
Last modified
CVE-2020-27339 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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).. EPSS estimates a 0.32% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 | All versions |
| Siemens | Simatic Field Pg M5 Firmware | All versions |
| Siemens | Simatic Field Pg M6 Firmware | All versions |
| Siemens | Simatic Ipc127e Firmware | All versions |
| Siemens | Simatic Ipc227g Firmware | All versions |
| Siemens | Simatic Ipc277g Firmware | All versions |
| Siemens | Simatic Ipc327g Firmware | All versions |
| Siemens | Simatic Ipc377g Firmware | All versions |
| Siemens | Simatic Ipc427e Firmware | All versions |
| Siemens | Simatic Ipc477e Firmware | All versions |
| Siemens | Simatic Ipc477e Pro Firmware | All versions |
| Siemens | Simatic Ipc627e Firmware | All versions |
| Siemens | Simatic Ipc647e Firmware | All versions |
| Siemens | Simatic Ipc677e Firmware | All versions |
| Siemens | Simatic Ipc847e Firmware | All versions |
| Siemens | Simatic Itp1000 Firmware | All versions |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20220216-0005/Third Party Advisory
- https://www.insyde.com/security-pledge/SA-2021001Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20220216-0005/Third Party Advisory
- https://www.insyde.com/security-pledge/SA-2021001Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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