CVE-2021-3901: Grumpydictator/firefly iii Cross-Site Request Forgery Vulnerability

LOW
Advisory Identifier: GHSA-rqgp-ccph-5w65
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CVSS 3.5
CWE-352
Published
Advisory Summary

CVE-2021-3901 is a LOW (CVSS 3.5) cross-site request forgery vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Grumpydictator/firefly iii libraries in the Packagist ecosystem. The issue involves cross-site request forgery in firefly-iii. Remediation is available in the latest vendor maintenance releases.

CVE-2021-3901 at a Glance

CVE Identifier CVE-2021-3901
GHSA Identifier GHSA-rqgp-ccph-5w65
Severity LOW
CVSS v3.1 Base Score 3.5
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Grumpydictator/firefly iii
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 3.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L).

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

How to Fix CVE-2021-3901

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

grumpydictator/firefly-iii fixed: Latest secure release 
Upgrade grumpydictator/firefly-iii to Latest secure release
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 grumpydictator/firefly-iii

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-3901, inspect your project dependencies for Grumpydictator/firefly iii:

inspect dependencies for grumpydictator/firefly-iii

Analyze the terminal output to locate any version of Grumpydictator/firefly iii in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Grumpydictator/firefly iii, 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

firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF).

CVE-2021-3901 Affected Grumpydictator/firefly iii Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
grumpydictator/firefly-iii
 Packagist
≤ 5.6.2

References

NVD — CVE-2021-3901 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3901
Security Fix Commit FIX COMMIT
https://github.com/firefly-iii/firefly-iii/commit/b42d8d1e305cad70d9b83b33cd8e0d7a4b2060c2
Grumpydictator/firefly iii Source Repository REPOSITORY
https://github.com/firefly-iii/firefly-iii
huntr.dev/bounties/62508fdc-c... WEB
https://huntr.dev/bounties/62508fdc-c26b-4312-bf75-fd3a3f997464

Frequently Asked Questions

What is CVE-2021-3901?
CVE-2021-3901 is a security vulnerability in Grumpydictator/firefly iii involving Cross-Site Request Forgery in firefly-iii under CWE-352: Cross-Site Request Forgery (CSRF).
Which Grumpydictator/firefly iii versions are affected?
Affected versions include releases prior to current release patches across affected packages: grumpydictator/firefly-iii.
What version fixes CVE-2021-3901?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is grumpydictator/firefly-iii affected?
Yes, grumpydictator/firefly-iii is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-3901?
CVE-2021-3901 has a CVSS v3.1 base score of 3.5 (LOW) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2021-3901?
CVE-2021-3901 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2021-3901?
Run the dependency tree command: 'inspect dependencies for grumpydictator/firefly-iii'. 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-rqgp-ccph-5w65",
  "modified" : "2021-11-02T18:42:29Z",
  "published" : "2021-10-28T23:14:14Z",
  "aliases" : [ "CVE-2021-3901" ],
  "summary" : "Cross-Site Request Forgery in firefly-iii",
  "details" : "firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "grumpydictator/firefly-iii"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "5.6.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-3901"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/firefly-iii/firefly-iii/commit/b42d8d1e305cad70d9b83b33cd8e0d7a4b2060c2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/firefly-iii/firefly-iii"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/62508fdc-c26b-4312-bf75-fd3a3f997464"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-10-28T21:12:18Z",
    "nvd_published_at" : "2021-10-27T21:15:00Z"
  }
}