CVE-2021-3730: Grumpydictator/firefly iii Firefly-iii Is Vulnerable To Cross-Site Vulnerability

MODERATE
Advisory Identifier: GHSA-c676-mcw3-qg55
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CVSS 6.5
CWE-352
Published
Advisory Summary

CVE-2021-3730 is a MODERATE (CVSS 6.5) firefly-iii is vulnerable to cross-site vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Grumpydictator/firefly iii libraries in the Packagist ecosystem. The issue involves firefly-iii is vulnerable to cross-site request forgery (csrf). Remediation is available by upgrading affected packages to version 5.6.0.

CVE-2021-3730 at a Glance

CVE Identifier CVE-2021-3730
GHSA Identifier GHSA-c676-mcw3-qg55
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Grumpydictator/firefly iii
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

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

How to Fix CVE-2021-3730

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: 5.6.0 
Upgrade grumpydictator/firefly-iii to 5.6.0
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-2021-3730, 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 5.6.0), 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-2021-3730 Affected Grumpydictator/firefly iii Versions

1 component(s)
Fixed Versions:
5.6.0
Product / Package Ecosystem Affected Versions Fixed Version
grumpydictator/firefly-iii
 Packagist
< 5.6.0
5.6.0

References

NVD — CVE-2021-3730 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3730
Security Fix Commit FIX COMMIT
https://github.com/firefly-iii/firefly-iii/commit/f80178b1b2b7864d17500a131d570c353c9a26f6
Grumpydictator/firefly iii Source Repository REPOSITORY
https://github.com/firefly-iii/firefly-iii
huntr.dev/bounties/ea181323-5... WEB
https://huntr.dev/bounties/ea181323-51f8-46a2-a60f-6a401907feb7

Frequently Asked Questions

What is CVE-2021-3730?
CVE-2021-3730 is a security vulnerability in Grumpydictator/firefly iii involving firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF) under CWE-352: Cross-Site Request Forgery (CSRF).
Which Grumpydictator/firefly iii versions are affected?
Affected versions include releases prior to 5.6.0 across affected packages: grumpydictator/firefly-iii.
What version fixes CVE-2021-3730?
Upgrading to 5.6.0 (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 5.6.0. Upgrade your dependency to 5.6.0 or later.
What is the CVSS score of CVE-2021-3730?
CVE-2021-3730 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2021-3730?
CVE-2021-3730 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-2021-3730?
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-c676-mcw3-qg55",
  "modified" : "2021-08-27T12:48:30Z",
  "published" : "2021-08-25T14:50:08Z",
  "aliases" : [ "CVE-2021-3730" ],
  "summary" : "firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)",
  "details" : "firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "grumpydictator/firefly-iii"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.6.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-3730"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/firefly-iii/firefly-iii/commit/f80178b1b2b7864d17500a131d570c353c9a26f6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/firefly-iii/firefly-iii"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/ea181323-51f8-46a2-a60f-6a401907feb7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-24T20:03:09Z",
    "nvd_published_at" : "2021-08-23T13:15:00Z"
  }
}