CVE-2022-33154: Brotkrueml/schema Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-374w-gwqr-fmxg
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2022-33154 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Brotkrueml/schema libraries in the Packagist ecosystem. The issue involves brotkrueml/schema fails to properly encode user input for output in html context, leading to xss. Remediation is available by upgrading affected packages to version 2.5.1, 1.13.1.

CVE-2022-33154 at a Glance

CVE Identifier CVE-2022-33154
GHSA Identifier GHSA-374w-gwqr-fmxg
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Brotkrueml/schema
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2022-33154

To remediate this vulnerability, upgrade all affected Brotkrueml/schema dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

brotkrueml/schema fixed: 2.5.1 
Upgrade brotkrueml/schema to 2.5.1
brotkrueml/schema fixed: 1.13.1 
Upgrade brotkrueml/schema to 1.13.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for brotkrueml/schema

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-33154, inspect your project dependencies for Brotkrueml/schema:

inspect dependencies for brotkrueml/schema

Analyze the terminal output to locate any version of Brotkrueml/schema in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.5.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Brotkrueml/schema, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The extension fails to properly encode user input for output in HTML context. A TYPO3 backend user account is required to exploit the vulnerability.

CVE-2022-33154 Affected Brotkrueml/schema Versions

2 component(s)
Fixed Versions:
2.5.11.13.1
Product / Package Ecosystem Affected Versions Fixed Version
brotkrueml/schema
 Packagist
≥ 2.0.0
< 2.5.1
2.5.1
brotkrueml/schema
 Packagist
< 1.13.1
1.13.1

References

NVD — CVE-2022-33154 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-33154
Brotkrueml/schema Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/brotkrueml/schema/CVE-2022-33154.yaml
Brotkrueml/schema Source Repository REPOSITORY
https://github.com/brotkrueml/schema
Brotkrueml/schema Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2022-012

Frequently Asked Questions

What is CVE-2022-33154?
CVE-2022-33154 is a security vulnerability in Brotkrueml/schema involving brotkrueml/schema fails to properly encode user input for output in HTML context, leading to XSS under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Brotkrueml/schema versions are affected?
Affected versions include releases prior to 2.5.1, 1.13.1 across affected packages: brotkrueml/schema.
What version fixes CVE-2022-33154?
Upgrading to 2.5.1, 1.13.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is brotkrueml/schema affected?
Yes, brotkrueml/schema is affected in releases prior to 2.5.1, 1.13.1. Upgrade your dependency to 2.5.1, 1.13.1 or later.
What is the CVSS score of CVE-2022-33154?
CVE-2022-33154 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2022-33154?
CVE-2022-33154 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2022-33154?
Run the dependency tree command: 'inspect dependencies for brotkrueml/schema'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-374w-gwqr-fmxg",
  "modified" : "2022-07-21T15:23:45Z",
  "published" : "2022-06-17T21:46:14Z",
  "aliases" : [ "CVE-2022-33154" ],
  "summary" : "brotkrueml/schema fails to properly encode user input for output in HTML context, leading to XSS",
  "details" : "The extension fails to properly encode user input for output in HTML context. A TYPO3 backend user account is required to exploit the vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "brotkrueml/schema"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.5.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "brotkrueml/schema"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.13.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-33154"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/brotkrueml/schema/CVE-2022-33154.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/brotkrueml/schema"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2022-012"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-17T21:46:14Z",
    "nvd_published_at" : "2022-07-12T22:15:00Z"
  }
}