CVE-2023-3825

2023-07-3123:15:10

CWE-400

CWE-787

[email protected]

web.nvd.nist.gov

cve-2023-3825

ptc kepserverex

vulnerability

uncontrolled resource consumption

opc ua

recursive object

stack overflow

7.5 High

CVSS3

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

0.001 Low

EPSS

Percentile

40.6%

JSON

PTC’s KEPServerEX Versions 6.0 to 6.14.263 are vulnerable to being made to read a recursively defined object that leads to uncontrolled resource consumption. KEPServerEX uses OPC UA, a protocol which defines various object types that can be nested to create complex arrays. It does not implement a check to see if such an object is recursively defined, so an attack could send a maliciously created message that the decoder would try to decode until the stack overflowed and the device crashed.

Affected configurations

NVD

Node

kepwarekepserverexRange6.0.0–6.14.263

CPENameOperatorVersion
kepware:kepserverexkepware kepserverexle6.14.263

CPE	Name	Operator	Version
kepware:kepserverex	kepware kepserverex	le	6.14.263

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "KEPServerEX",
    "vendor": "PTC",
    "versions": [
      {
        "lessThanOrEqual": "6.14.263",
        "status": "affected",
        "version": "6.0",
        "versionType": "custom"
      }
    ]
  }
]