CVE-2021-3992: Kevinpapst/kimai2 Kimai2 Is Vulnerable To Improper Vulnerability

MODERATE
Advisory Identifier: GHSA-9w8f-7wgr-2h7g
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CVSS 6.5
CWE-284 CWE-639 CWE-863
Published
Advisory Summary

CVE-2021-3992 is a MODERATE (CVSS 6.5) kimai2 is vulnerable to improper vulnerability (CWE-284: Improper Access Control) affecting Kevinpapst/kimai2 libraries in the Packagist ecosystem. The issue involves kimai2 is vulnerable to improper access control. Remediation is available by upgrading affected packages to version 1.16.3.

CVE-2021-3992 at a Glance

CVE Identifier CVE-2021-3992
GHSA Identifier GHSA-9w8f-7wgr-2h7g
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-284: Improper Access Control
Affected Product Kevinpapst/kimai2
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:H/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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2021-3992

To remediate this vulnerability, upgrade all affected Kevinpapst/kimai2 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

kevinpapst/kimai2 fixed: 1.16.3 
Upgrade kevinpapst/kimai2 to 1.16.3
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 kevinpapst/kimai2

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-3992, inspect your project dependencies for Kevinpapst/kimai2:

inspect dependencies for kevinpapst/kimai2

Analyze the terminal output to locate any version of Kevinpapst/kimai2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.16.3), 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Kevinpapst/kimai2, 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

kimai2 is vulnerable to Improper Access Control

CVE-2021-3992 Affected Kevinpapst/kimai2 Versions

1 component(s)
Fixed Versions:
1.16.3
Product / Package Ecosystem Affected Versions Fixed Version
kevinpapst/kimai2
 Packagist
< 1.16.3
1.16.3

References

NVD — CVE-2021-3992 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3992
Security Fix Commit FIX COMMIT
https://github.com/kevinpapst/kimai2/commit/ff9acab0fc81f0e9490462739ef15fe4ab028ea5
Kevinpapst/kimai2 Source Repository REPOSITORY
https://github.com/kevinpapst/kimai2
huntr.dev/bounties/a0c438fb-c... WEB
https://huntr.dev/bounties/a0c438fb-c8e1-40cf-acc6-c8a532b80b93

Frequently Asked Questions

What is CVE-2021-3992?
CVE-2021-3992 is a security vulnerability in Kevinpapst/kimai2 involving kimai2 is vulnerable to Improper Access Control under CWE-284: Improper Access Control.
Which Kevinpapst/kimai2 versions are affected?
Affected versions include releases prior to 1.16.3 across affected packages: kevinpapst/kimai2.
What version fixes CVE-2021-3992?
Upgrading to 1.16.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is kevinpapst/kimai2 affected?
Yes, kevinpapst/kimai2 is affected in releases prior to 1.16.3. Upgrade your dependency to 1.16.3 or later.
What is the CVSS score of CVE-2021-3992?
CVE-2021-3992 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2021-3992?
CVE-2021-3992 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2021-3992?
Run the dependency tree command: 'inspect dependencies for kevinpapst/kimai2'. 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-9w8f-7wgr-2h7g",
  "modified" : "2021-12-03T15:37:45Z",
  "published" : "2021-12-03T20:42:59Z",
  "aliases" : [ "CVE-2021-3992" ],
  "summary" : "kimai2 is vulnerable to Improper Access Control",
  "details" : "kimai2 is vulnerable to Improper Access Control",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "kevinpapst/kimai2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.16.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-3992"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kevinpapst/kimai2/commit/ff9acab0fc81f0e9490462739ef15fe4ab028ea5"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/kevinpapst/kimai2"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/a0c438fb-c8e1-40cf-acc6-c8a532b80b93"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284", "CWE-639", "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-12-03T15:37:45Z",
    "nvd_published_at" : "2021-12-01T11:15:00Z"
  }
}