CVE-2024-38534 Suricata modbus: txs without responses are never freed

2024-07-1114:47:47

CWE-770

GitHub_M

github.com

suricata

modbus

resource accumulation

upgrade

stream reassembly

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.8

Confidence

High

EPSS

0.001

Percentile

23.5%

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Crafted modbus traffic can lead to unlimited resource accumulation within a flow. Upgrade to 7.0.6. Set a limited stream.reassembly.depth to reduce the issue.

CNA Affected

[
  {
    "vendor": "OISF",
    "product": "suricata",
    "versions": [
      {
        "status": "affected",
        "version": "< 7.0.6"
      }
    ]
  }
]

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*"
    ],
    "vendor": "oisf",
    "product": "suricata",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "7.0.6",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]