CVE-2020-4050 set-screen-option filter misuse by plugins leading to privilege escalation in WordPress

2020-06-1216:00:17

CWE-288

GitHub_M

www.cve.org

CVSS3

3.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

41.7%

JSON

In affected versions of WordPress, misuse of the set-screen-option filter’s return value allows arbitrary user meta fields to be saved. It does require an admin to install a plugin that would misuse the filter. Once installed, it can be leveraged by low privileged users. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

CNA Affected

[
  {
    "product": "wordpress-develop",
    "vendor": "WordPress",
    "versions": [
      {
        "status": "affected",
        "version": ">= 5.4.0, < 5.4.2"
      },
      {
        "status": "affected",
        "version": ">= 5.3.0, < 5.3.4"
      },
      {
        "status": "affected",
        "version": ">= 5.2.0, < 5.2.7"
      },
      {
        "status": "affected",
        "version": ">= 5.1.0, < 5.1.6"
      },
      {
        "status": "affected",
        "version": ">= 5.0.0, < 5.0.10"
      },
      {
        "status": "affected",
        "version": ">= 4.9.0, < 4.9.15"
      },
      {
        "status": "affected",
        "version": ">= 4.8.0, < 4.8.14"
      },
      {
        "status": "affected",
        "version": ">= 4.7.0, < 4.7.18"
      },
      {
        "status": "affected",
        "version": ">= 4.6.0, < 4.6.19"
      },
      {
        "status": "affected",
        "version": ">= 4.5.0, < 4.5.22"
      },
      {
        "status": "affected",
        "version": ">= 4.4.0, < 4.4.23"
      },
      {
        "status": "affected",
        "version": ">= 4.3.0, < 4.3.24"
      },
      {
        "status": "affected",
        "version": ">= 4.2.0, < 4.2.28"
      },
      {
        "status": "affected",
        "version": ">= 4.1.0, < 4.1.31"
      },
      {
        "status": "affected",
        "version": ">= 4.0.0, < 4.0.31"
      },
      {
        "status": "affected",
        "version": ">= 3.9.0, < 3.9.32"
      },
      {
        "status": "affected",
        "version": ">= 3.8.0, < 3.8.34"
      },
      {
        "status": "affected",
        "version": ">= 3.7.0, < 3.7.34"
      }
    ]
  }
]