CVE-2021-43561: Pegasus/google for jobs Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-hfm8-2q22-h7hv
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2021-43561 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Pegasus/google for jobs libraries in the Packagist ecosystem. The issue involves cross-site scripting in pegasus/google-for-jobs. Remediation is available by upgrading affected packages to version 1.5.1, 2.1.1.

CVE-2021-43561 at a Glance

CVE Identifier CVE-2021-43561
GHSA Identifier GHSA-hfm8-2q22-h7hv
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 Pegasus/google for jobs
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-2021-43561

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

pegasus/google-for-jobs fixed: 1.5.1 
Upgrade pegasus/google-for-jobs to 1.5.1
pegasus/google-for-jobs fixed: 2.1.1 
Upgrade pegasus/google-for-jobs to 2.1.1
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 pegasus/google-for-jobs

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-43561, inspect your project dependencies for Pegasus/google for jobs:

inspect dependencies for pegasus/google-for-jobs

Analyze the terminal output to locate any version of Pegasus/google for jobs in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.1), 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 Pegasus/google for jobs, 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

An XSS issue was discovered in the google_for_jobs (aka Google for Jobs) extension before 1.5.1 and 2.x before 2.1.1 for TYPO3. 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-2021-43561 Affected Pegasus/google for jobs Versions

2 component(s)
Fixed Versions:
1.5.12.1.1
Product / Package Ecosystem Affected Versions Fixed Version
pegasus/google-for-jobs
 Packagist
< 1.5.1
1.5.1
pegasus/google-for-jobs
 Packagist
≥ 2.0.0
< 2.1.1
2.1.1

References

NVD — CVE-2021-43561 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43561
Pegasus/google for jobs Source Repository REPOSITORY
https://github.com/pegasuswerbeagentur/google_for_jobs
Pegasus/google for jobs Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2021-015

Frequently Asked Questions

What is CVE-2021-43561?
CVE-2021-43561 is a security vulnerability in Pegasus/google for jobs involving Cross-site Scripting in pegasus/google-for-jobs under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Pegasus/google for jobs versions are affected?
Affected versions include releases prior to 1.5.1, 2.1.1 across affected packages: pegasus/google-for-jobs.
What version fixes CVE-2021-43561?
Upgrading to 1.5.1, 2.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pegasus/google-for-jobs affected?
Yes, pegasus/google-for-jobs is affected in releases prior to 1.5.1, 2.1.1. Upgrade your dependency to 1.5.1, 2.1.1 or later.
What is the CVSS score of CVE-2021-43561?
CVE-2021-43561 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-2021-43561?
CVE-2021-43561 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-2021-43561?
Run the dependency tree command: 'inspect dependencies for pegasus/google-for-jobs'. 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-hfm8-2q22-h7hv",
  "modified" : "2021-11-17T21:24:36Z",
  "published" : "2021-11-15T17:39:18Z",
  "aliases" : [ "CVE-2021-43561" ],
  "summary" : "Cross-site Scripting in pegasus/google-for-jobs",
  "details" : "An XSS issue was discovered in the google_for_jobs (aka Google for Jobs) extension before 1.5.1 and 2.x before 2.1.1 for TYPO3. 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" : "pegasus/google-for-jobs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pegasus/google-for-jobs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-43561"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pegasuswerbeagentur/google_for_jobs"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2021-015"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-11-12T19:44:37Z",
    "nvd_published_at" : "2021-11-10T15:15:00Z"
  }
}