title: Stack-buffer Overflow in library module zbxjson
description: The zabbix/src/libs/zbxjson module is vulnerable to a buffer overflow when parsing JSON files via zbx_json_open.
problem types: CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
affected:
{
defaultStatus: unaffected
modules: [Agent, Proxy, Server]
product: Zabbix
repo: https://git.zabbix.com/
vendor: Zabbix
versions:
changes: [at: 6.0.21rc1, status: unaffected], lessThanOrEqual: 6.0.20, status: affected, version: 6.0.0, versionType: git
changes: [at: 6.4.6rc1, status: unaffected], lessThanOrEqual: 6.4.5, status: affected, version: 6.4.0, versionType: git
changes: [at: 7.0.0alpha4, status: unaffected], lessThanOrEqual: 7.0.0alpha3, status: affected, version: 7.0.0alpha1, versionType: git
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.6
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL