CVE-2023-29451 Denial of service caused by a bug in the JSON parser

2023-07-1309:29:42

CWE-20

Zabbix

www.cve.org

denial of service

json parser

buffer overrun

zabbix server

zabbix proxy

4.7 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

22.8%

JSON

Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.

CNA Affected

[
  {
    "defaultStatus": "affected",
    "modules": [
      "Server",
      "Proxy"
    ],
    "product": "Zabbix",
    "repo": "https://git.zabbix.com/",
    "vendor": "Zabbix",
    "versions": [
      {
        "changes": [
          {
            "at": "6.0.15rc1",
            "status": "unaffected"
          }
        ],
        "lessThanOrEqual": "6.0.14",
        "status": "affected",
        "version": "6.0",
        "versionType": "git"
      },
      {
        "changes": [
          {
            "at": "6.2.9rc2",
            "status": "unaffected"
          }
        ],
        "lessThanOrEqual": "6.2.8",
        "status": "affected",
        "version": "6.2",
        "versionType": "git"
      },
      {
        "changes": [
          {
            "at": "6.4.1rc2",
            "status": "unaffected"
          }
        ],
        "lessThanOrEqual": "6.4.0",
        "status": "affected",
        "version": "6.4",
        "versionType": "git"
      },
      {
        "changes": [
          {
            "at": "7.0.0alpha1",
            "status": "unaffected"
          }
        ],
        "lessThanOrEqual": "7.0.0alpha1 ",
        "status": "affected",
        "version": "7.0.0alpha1",
        "versionType": "git"
      }
    ]
  }
]