CVE-2022-2421 Socket.io - Improper type validation in attachment parsing

2022-10-2500:00:00

CWE-89

DIVD

www.cve.org

socket.io

type validation

attachment parsing

cve-2022-2421

security vulnerability

query object

10 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.6 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

59.2%

JSON

Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.

CNA Affected

[
  {
    "product": "Socket.io-Parser",
    "vendor": "Socket.io",
    "versions": [
      {
        "lessThan": "4.2.1",
        "status": "affected",
        "version": "4.x",
        "versionType": "custom"
      }
    ]
  }
]