CVE-2022-24350: insyde insydeh2o Classic Buffer Overflow

Vulnerability summary

CVE-2022-24350 is a medium (CVSS 5.5) Classic Buffer Overflow vulnerability in insyde insydeh2o. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.9% of scored vulnerabilities.

Timeline

1. 12-04-2023
   PublishedVulnerability first disclosed.
2. 19-03-2025
   Last modifiedVulnerability information updated.

Description

An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. IHISI function 0x17 verifies that the output buffer lies within the command buffer but does not verify that output data does not go beyond the end of the command buffer. In particular, the GetFlashTable function is called directly on the Command Buffer before the DataSize is check, leading to possible circumstances where the data immediately following the command buffer could be destroyed before returning a buffer size error.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.