CVEvulnerability

CVE-2020-27339

6.7 MEDIUM Published 2021-06-16 Modified 2026-08-11 Official page ↗
Status
Modified
Published
2021-06-16
Last modified
2026-08-11
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-20

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).

Affected configurations

• 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 simatic field pg m5 firmware • siemens simatic field pg m6 firmware • siemens simatic ipc127e firmware • siemens simatic ipc227g firmware • siemens simatic ipc277g firmware • siemens simatic ipc327g firmware • siemens simatic ipc377g firmware • siemens simatic ipc427e firmware • siemens simatic ipc477e firmware • siemens simatic ipc477e pro firmware • siemens simatic ipc627e firmware • siemens simatic ipc647e firmware • siemens simatic ipc677e firmware • siemens simatic ipc847e firmware • siemens simatic itp1000 firmware

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References