CVE-2020-25026: Derhansen/sf event mgt Information Disclosure Vulnerability

MODERATE
Advisory Identifier: GHSA-g8rg-7rpr-cwr2
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CVSS 4.3
CWE-863
Published
Advisory Summary

CVE-2020-25026 is a MODERATE (CVSS 4.3) information disclosure vulnerability (CWE-863: Incorrect Authorization) affecting Derhansen/sf event mgt libraries in the Packagist ecosystem. The issue involves information disclosure in typo3 extension sf_event_mgt. Remediation is available by upgrading affected packages to version 4.3.1, 5.1.1.

CVE-2020-25026 at a Glance

CVE Identifier CVE-2020-25026
GHSA Identifier GHSA-g8rg-7rpr-cwr2
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-863: Incorrect Authorization
Affected Product Derhansen/sf event mgt
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.3

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:N/S:U/C:L/I:N/A:N).

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

How to Fix CVE-2020-25026

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

derhansen/sf_event_mgt fixed: 4.3.1 
Upgrade derhansen/sf_event_mgt to 4.3.1
derhansen/sf_event_mgt fixed: 5.1.1 
Upgrade derhansen/sf_event_mgt to 5.1.1
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 derhansen/sf_event_mgt

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-25026, inspect your project dependencies for Derhansen/sf event mgt:

inspect dependencies for derhansen/sf_event_mgt

Analyze the terminal output to locate any version of Derhansen/sf event mgt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.3.1), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Derhansen/sf event mgt, 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

A missing access check in the backend module allows an authenticated backend user to export participant data for events which the user does not have access to, resulting in Information Disclosure. Another missing access check in the backend module allows an authenticated backend user to send emails to event participants for events which the user does not have access to, resulting in Broken Access Control. External reference: [https://typo3.org/security/advisory/typo3-ext-sa-2020-017](https://typo3.org/security/advisory/typo3-ext-sa-2020-017)

CVE-2020-25026 Affected Derhansen/sf event mgt Versions

2 component(s)
Fixed Versions:
4.3.15.1.1
Product / Package Ecosystem Affected Versions Fixed Version
derhansen/sf_event_mgt
 Packagist
< 4.3.1
4.3.1
derhansen/sf_event_mgt
 Packagist
≥ 5.0.0
< 5.1.1
5.1.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/derhansen/sf_event_mgt/security/advisories/GHSA-g8rg-7rpr-cwr2
NVD — CVE-2020-25026 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25026
Security Fix Commit FIX COMMIT
https://github.com/derhansen/sf_event_mgt/commit/17edcbf608b252cc1123e1279f0735f6aa28fef4
packagist.org/packages/derhansen/... WEB
https://packagist.org/packages/derhansen/sf_event_mgt
Derhansen/sf event mgt Security Information SECURITY
https://typo3.org/help/security-advisories
Derhansen/sf event mgt Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2020-017

Frequently Asked Questions

What is CVE-2020-25026?
CVE-2020-25026 is a security vulnerability in Derhansen/sf event mgt involving Information Disclosure in TYPO3 extension sf_event_mgt under CWE-863: Incorrect Authorization.
Which Derhansen/sf event mgt versions are affected?
Affected versions include releases prior to 4.3.1, 5.1.1 across affected packages: derhansen/sf_event_mgt.
What version fixes CVE-2020-25026?
Upgrading to 4.3.1, 5.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is derhansen/sf_event_mgt affected?
Yes, derhansen/sf_event_mgt is affected in releases prior to 4.3.1, 5.1.1. Upgrade your dependency to 4.3.1, 5.1.1 or later.
What is the CVSS score of CVE-2020-25026?
CVE-2020-25026 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2020-25026?
CVE-2020-25026 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Packagist dependencies for CVE-2020-25026?
Run the dependency tree command: 'inspect dependencies for derhansen/sf_event_mgt'. 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-g8rg-7rpr-cwr2",
  "modified" : "2021-08-02T14:33:59Z",
  "published" : "2020-09-02T18:03:26Z",
  "aliases" : [ "CVE-2020-25026" ],
  "summary" : "Information Disclosure in TYPO3 extension sf_event_mgt",
  "details" : "A missing access check in the backend module allows an authenticated backend user to export participant data for events which the user does not have access to, resulting in Information Disclosure. \n\nAnother missing access check in the backend module allows an authenticated backend user to send emails to event participants for events which the user does not have access to, resulting in Broken Access Control.\n\nExternal reference: [https://typo3.org/security/advisory/typo3-ext-sa-2020-017](https://typo3.org/security/advisory/typo3-ext-sa-2020-017)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "derhansen/sf_event_mgt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.3.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "derhansen/sf_event_mgt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/derhansen/sf_event_mgt/security/advisories/GHSA-g8rg-7rpr-cwr2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-25026"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/derhansen/sf_event_mgt/commit/17edcbf608b252cc1123e1279f0735f6aa28fef4"
  }, {
    "type" : "WEB",
    "url" : "https://packagist.org/packages/derhansen/sf_event_mgt"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/help/security-advisories"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2020-017"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-09-02T18:03:13Z",
    "nvd_published_at" : "2020-09-02T17:15:00Z"
  }
}