CVE-2021-36787: In2code/femanager Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-f3rf-v9qm-9c89
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CWE-79
Published
Advisory Summary

CVE-2021-36787 is a MODERATE cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting In2code/femanager libraries in the Packagist ecosystem. The issue involves cross-site scripting in the femanager typo3 extension. Remediation is available by upgrading affected packages to version 5.5.1, 6.3.1.

CVE-2021-36787 at a Glance

CVE Identifier CVE-2021-36787
GHSA Identifier GHSA-f3rf-v9qm-9c89
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product In2code/femanager
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2021-36787

To remediate this vulnerability, upgrade all affected In2code/femanager dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

in2code/femanager fixed: 5.5.1 
Upgrade in2code/femanager to 5.5.1
in2code/femanager fixed: 6.3.1 
Upgrade in2code/femanager to 6.3.1
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 in2code/femanager

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-36787, inspect your project dependencies for In2code/femanager:

inspect dependencies for in2code/femanager

Analyze the terminal output to locate any version of In2code/femanager in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.5.1), 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 In2code/femanager, 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 allows by default to upload SVG files when a logged in frontend user uploads a new profile image. This may lead to Cross-Site Scripting, when the uploaded SVG image is used as is on the website. Note: If SVG uploads are required, it is recommended to use the TYPO3 extension svg_sanitizer (added to TYPO3 core since versions 9.5.28, 10.4.18 and 11.3.0) to prevent upload of malicious SVG files or to set up a strict Content Security Policy for the destination folder of uploaded images.

CVE-2021-36787 Affected In2code/femanager Versions

2 component(s)
Fixed Versions:
5.5.16.3.1
Product / Package Ecosystem Affected Versions Fixed Version
in2code/femanager
 Packagist
< 5.5.1
5.5.1
in2code/femanager
 Packagist
≥ 6.0.0
< 6.3.1
6.3.1

References

NVD — CVE-2021-36787 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36787
Security Fix Commit FIX COMMIT
https://github.com/in2code-de/femanager/commit/70f873c60f0e40ffd6a1300218ca368156fc1bf2
extensions.typo3.org/extension/femanager WEB
https://extensions.typo3.org/extension/femanager
In2code/femanager Source Repository REPOSITORY
https://github.com/in2code-de/femanager
In2code/femanager Release RELEASE
https://github.com/in2code-de/femanager/releases/tag/6.3.1
In2code/femanager Security Information SECURITY
https://typo3.org/help/security-advisories/security
In2code/femanager Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2021-010
In2code/femanager Security Information SECURITY
http://packetstormsecurity.com/files/165675/TYPO3-femanager-6.3.0-Cross-Site-Scripting.html
seclists.org/fulldisclosure/2022... WEB
http://seclists.org/fulldisclosure/2022/Jan/53

Frequently Asked Questions

What is CVE-2021-36787?
CVE-2021-36787 is a security vulnerability in In2code/femanager involving Cross-site Scripting in the femanager TYPO3 extension under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which In2code/femanager versions are affected?
Affected versions include releases prior to 5.5.1, 6.3.1 across affected packages: in2code/femanager.
What version fixes CVE-2021-36787?
Upgrading to 5.5.1, 6.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is in2code/femanager affected?
Yes, in2code/femanager is affected in releases prior to 5.5.1, 6.3.1. Upgrade your dependency to 5.5.1, 6.3.1 or later.
What CWE is associated with CVE-2021-36787?
CVE-2021-36787 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-2021-36787?
Run the dependency tree command: 'inspect dependencies for in2code/femanager'. 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-f3rf-v9qm-9c89",
  "modified" : "2021-08-30T18:35:42Z",
  "published" : "2021-09-01T18:36:51Z",
  "aliases" : [ "CVE-2021-36787" ],
  "summary" : "Cross-site Scripting in the femanager TYPO3 extension",
  "details" : "The extension allows by default to upload SVG files when a logged in frontend user uploads a new profile image. This may lead to Cross-Site Scripting, when the uploaded SVG image is used as is on the website.\n\nNote: If SVG uploads are required, it is recommended to use the TYPO3 extension svg_sanitizer (added to TYPO3 core since versions 9.5.28, 10.4.18 and 11.3.0) to prevent upload of malicious SVG files or to set up a strict Content Security Policy for the destination folder of uploaded images.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "in2code/femanager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.5.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "in2code/femanager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-36787"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/in2code-de/femanager/commit/70f873c60f0e40ffd6a1300218ca368156fc1bf2"
  }, {
    "type" : "WEB",
    "url" : "https://extensions.typo3.org/extension/femanager"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/in2code-de/femanager"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/in2code-de/femanager/releases/tag/6.3.1"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/help/security-advisories/security"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2021-010"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/165675/TYPO3-femanager-6.3.0-Cross-Site-Scripting.html"
  }, {
    "type" : "WEB",
    "url" : "http://seclists.org/fulldisclosure/2022/Jan/53"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-30T18:35:42Z",
    "nvd_published_at" : "2021-08-13T17:15:00Z"
  }
}