An stack buffer overflow vulnerability leads to arbitrary code execution issue exists in Insyde InsydeH2O with kernel 5.0 up to and including 5.5. If the attacker modifies specific UEFI variables, it can cause a stack overflow, leading to arbitrary code execution. The specific variables are normally locked (read-only) at the OS level and therefore an attack would require direct SPI modification. If an attacker can change the values of at least two variables out of three (SecureBootEnforce, SecureBoot, RestoreBootSettings), it is possible to execute arbitrary code.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
insyde kernel |
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