CVE-2021-42059
MediumCVSS 6.7Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
In InsydeH2O Kernel 5.0 through 5.4 before specific versions, a stack-based buffer overflow in the UEFI DisplayTypeDxe DXE driver can lead to arbitrary code execution.
Risk Assessment
An attacker with firmware access can take control of the system at the UEFI level, enabling persistent infection and bypass of OS security.
Recommendation
Update InsydeH2O firmware to a patched version (e.g., 05.08.41 or later for the respective kernel).
Other vulnerabilities in InsydeH2O
See all- CVE-2022-24031High
An issue was discovered in NvmExpressDxe in InsydeH2O with kernels 5.1 through 5.5. An SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM, potentially escalating privileges to SMM.
- CVE-2022-24030High
A vulnerability in AhciBusDxe in InsydeH2O with kernel 5.1-5.5 involves SMM memory corruption, allowing an attacker to write fixed or predictable data to SMRAM, potentially leading to privilege escalation to SMM.
- CVE-2021-43615High
An issue was discovered in HddPassword in InsydeH2O with kernels 5.1 through 5.5. An SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM, potentially escalating privileges to SMM.
- CVE-2021-43323High
A vulnerability in UsbCoreDxe in InsydeH2O (kernel 5.5 to 5.0) allows an attacker to hijack execution flow of code running in System Management Mode via an SMM callout. Exploitation could lead to privilege escalation to SMM.
- CVE-2021-42554High
A vulnerability in InsydeH2O with Kernel 5.0-5.5 involves SMM memory corruption in FvbServicesRuntimeDxe, allowing an attacker to write fixed or predictable data to SMRAM, potentially leading to privilege escalation to SMM.
- CVE-2021-42113High
A vulnerability in StorageSecurityCommandDxe in InsydeH2O with Kernel 5.1-5.3 involves an SMM callout that allows an attacker to hijack execution flow of code running in System Management Mode, potentially leading to privilege escalation to SMM.
- CVE-2021-42060High
A vulnerability in InsydeH2O Kernel allows an attacker to hijack execution flow of code running in System Management Mode via an Int15ServiceSmm SMM callout. Exploiting this issue could lead to escalating privileges to SMM.
- CVE-2021-41841High
A vulnerability in AhciBusDxe in InsydeH2O with kernel 5.0-5.5 allows an attacker to access System Management Mode and execute arbitrary code, due to inclusion of functionality from an untrusted control sphere.
- CVE-2021-41840High
A vulnerability in NvmExpressDxe in InsydeH2O with kernel 5.0-5.5 allows an attacker to access System Management Mode and execute arbitrary code, due to inclusion of functionality from an untrusted control sphere.
- CVE-2021-41839High
An issue was discovered in NvmExpressDxe in InsydeH2O for kernels 5.0 through 5.5. An untrusted pointer dereference causes SMM memory corruption, allowing an attacker to write fixed or predictable data to SMRAM, potentially escalating privileges to SMM.
Original NVD description (English source)
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.