title: Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability
description: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects "Standalone" and "Application" versions of Gecko Bootloader.
problem types: CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
affected:
{
defaultStatus: affected
modules: Firmware Update File Parser
platforms: ARM
product: Gecko Bootloader
repo: https://github.com/SiliconLabs/gecko_sdk/releases
vendor: Silicon Labs
versions:
lessThan: 4.3.1, status: affected, version: 0, versionType: 4.3.1
lessThan: 4.2.4, status: affected, version: 0, versionType: 4.2.4
status: unaffected, version: 4.3.2
status: unaffected, version: 4.2.4
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL