CVE-2022-1850: Filegator/filegator Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-rrhw-54r8-545q
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CVSS 5.4
CWE-22
Published
Advisory Summary

CVE-2022-1850 is a MODERATE (CVSS 5.4) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Filegator/filegator libraries in the Packagist ecosystem. The issue involves path traversal in filegator. Remediation is available by upgrading affected packages to version 7.8.0.

CVE-2022-1850 at a Glance

CVE Identifier CVE-2022-1850
GHSA Identifier GHSA-rrhw-54r8-545q
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Filegator/filegator
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:N/S:U/C:L/I:L/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 Low (I:L)
Availability None (A:N)

How to Fix CVE-2022-1850

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

filegator/filegator fixed: 7.8.0 
Upgrade filegator/filegator to 7.8.0
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 filegator/filegator

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-1850, inspect your project dependencies for Filegator/filegator:

inspect dependencies for filegator/filegator

Analyze the terminal output to locate any version of Filegator/filegator in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.8.0), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Filegator/filegator, 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

Path Traversal in FileGator prior to 7.8.0 for non-admin users. Files created with `..\` as part of their name will be interpreted as a path. Users are thus able to add filesystem entries outside the scope of their user to their dashboard and subsequently are able to modify those files.

CVE-2022-1850 Affected Filegator/filegator Versions

1 component(s)
Fixed Versions:
7.8.0
Product / Package Ecosystem Affected Versions Fixed Version
filegator/filegator
 Packagist
< 7.8.0
7.8.0

References

NVD — CVE-2022-1850 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-1850
Security Fix Commit FIX COMMIT
https://github.com/filegator/filegator/commit/6e2b68f17f48cdc1d6a4a93a2369d2069fe64989
Filegator/filegator Source Repository REPOSITORY
https://github.com/filegator/filegator
huntr.dev/bounties/07755f07-a... WEB
https://huntr.dev/bounties/07755f07-a412-4911-84a4-2f8c03c8f7ce

Frequently Asked Questions

What is CVE-2022-1850?
CVE-2022-1850 is a security vulnerability in Filegator/filegator involving Path Traversal in FileGator under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Filegator/filegator versions are affected?
Affected versions include releases prior to 7.8.0 across affected packages: filegator/filegator.
What version fixes CVE-2022-1850?
Upgrading to 7.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is filegator/filegator affected?
Yes, filegator/filegator is affected in releases prior to 7.8.0. Upgrade your dependency to 7.8.0 or later.
What is the CVSS score of CVE-2022-1850?
CVE-2022-1850 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2022-1850?
CVE-2022-1850 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Packagist dependencies for CVE-2022-1850?
Run the dependency tree command: 'inspect dependencies for filegator/filegator'. 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-rrhw-54r8-545q",
  "modified" : "2022-06-06T18:04:43Z",
  "published" : "2022-05-25T00:00:39Z",
  "aliases" : [ "CVE-2022-1850" ],
  "summary" : "Path Traversal in FileGator",
  "details" : "Path Traversal in FileGator prior to 7.8.0 for non-admin users. Files created with `..\\` as part of their name will be interpreted as a path. Users are thus able to add filesystem entries outside the scope of their user to their dashboard and subsequently are able to modify those files.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filegator/filegator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "7.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-1850"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/filegator/filegator/commit/6e2b68f17f48cdc1d6a4a93a2369d2069fe64989"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/filegator/filegator"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/07755f07-a412-4911-84a4-2f8c03c8f7ce"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-25T22:52:38Z",
    "nvd_published_at" : "2022-05-24T15:15:00Z"
  }
}