CVE-2022-1892: lenovo 100e_2nd_gen_firmware Heap-based Buffer Overflow

Vulnerability summary

CVE-2022-1892 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in lenovo 100e_2nd_gen_firmware. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.2% of scored vulnerabilities.

Timeline

1. 23-01-2023
   PublishedVulnerability first disclosed.
2. 02-04-2025
   Last modifiedVulnerability information updated.

Description

A buffer overflow in the SystemBootManagerDxe driver in some Lenovo Notebook products may allow an attacker with local privileges to execute arbitrary code.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• 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.