CVE-2020-4050 (GCVE-0-2020-4050)

Vulnerability from cvelistv5 – Published: 2020-06-12 16:00 – Updated: 2024-08-04 07:52
VLAI
Title
set-screen-option filter misuse by plugins leading to privilege escalation in WordPress
Summary
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).
Severity
3.5 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
Impacted products
Vendor Product Version
WordPress wordpress-develop Affected: >= 5.4.0, < 5.4.2
Affected: >= 5.3.0, < 5.3.4
Affected: >= 5.2.0, < 5.2.7
Affected: >= 5.1.0, < 5.1.6
Affected: >= 5.0.0, < 5.0.10
Affected: >= 4.9.0, < 4.9.15
Affected: >= 4.8.0, < 4.8.14
Affected: >= 4.7.0, < 4.7.18
Affected: >= 4.6.0, < 4.6.19
Affected: >= 4.5.0, < 4.5.22
Affected: >= 4.4.0, < 4.4.23
Affected: >= 4.3.0, < 4.3.24
Affected: >= 4.2.0, < 4.2.28
Affected: >= 4.1.0, < 4.1.31
Affected: >= 4.0.0, < 4.0.31
Affected: >= 3.9.0, < 3.9.32
Affected: >= 3.8.0, < 3.8.34
Affected: >= 3.7.0, < 3.7.34
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            {
              "status": "affected",
              "version": "\u003e= 5.2.0, \u003c 5.2.7"
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            {
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              "version": "\u003e= 5.1.0, \u003c 5.1.6"
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              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.0.10"
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            {
              "status": "affected",
              "version": "\u003e= 4.9.0, \u003c 4.9.15"
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            {
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              "version": "\u003e= 4.8.0, \u003c 4.8.14"
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              "version": "\u003e= 4.7.0, \u003c 4.7.18"
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              "status": "affected",
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            {
              "status": "affected",
              "version": "\u003e= 4.5.0, \u003c 4.5.22"
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            {
              "status": "affected",
              "version": "\u003e= 4.4.0, \u003c 4.4.23"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.3.0, \u003c 4.3.24"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.2.0, \u003c 4.2.28"
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            {
              "status": "affected",
              "version": "\u003e= 4.1.0, \u003c 4.1.31"
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          "lang": "en",
          "value": "In affected versions of WordPress, misuse of the `set-screen-option` filter\u0027s 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)."
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      "metrics": [
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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          "name": "FEDORA-2020-bbedd29391",
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        },
        {
          "name": "DSA-4709",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2020/dsa-4709"
        },
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          "tags": [
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            "x_refsource_MLIST"
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          "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html"
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          "name": "[debian-lts-announce] 20200911 [SECURITY] [DLA 2371-1] wordpress security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
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          "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00011.html"
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      "source": {
        "advisory": "GHSA-4vpv-fgg2-gcqc",
        "discovery": "UNKNOWN"
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      "title": "set-screen-option filter misuse by plugins leading to privilege escalation in WordPress",
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        "affects": {
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            "vendor_data": [
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                  "product_data": [
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                      "product_name": "wordpress-develop",
                      "version": {
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                            "version_value": "\u003e= 5.4.0, \u003c 5.4.2"
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                            "version_value": "\u003e= 4.5.0, \u003c 4.5.22"
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                          {
                            "version_value": "\u003e= 4.4.0, \u003c 4.4.23"
                          },
                          {
                            "version_value": "\u003e= 4.3.0, \u003c 4.3.24"
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                          {
                            "version_value": "\u003e= 4.2.0, \u003c 4.2.28"
                          },
                          {
                            "version_value": "\u003e= 4.1.0, \u003c 4.1.31"
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                          {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2020-4050",
    "datePublished": "2020-06-12T16:00:17.000Z",
    "dateReserved": "2019-12-30T00:00:00.000Z",
    "dateUpdated": "2024-08-04T07:52:20.829Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-10-03",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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