GHSA-chxf-fjcf-7fwp: Github.com/google/fscrypt Possible Filesystem Space Exhaustion By Vulnerability

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Advisory Summary

GHSA-chxf-fjcf-7fwp is a MODERATE possible filesystem space exhaustion by vulnerability (General Security Weakness) affecting Github.com/google/fscrypt libraries in the Go ecosystem. The issue involves possible filesystem space exhaustion by local users. Remediation is available by upgrading affected packages to version 0.3.3.

GHSA-chxf-fjcf-7fwp at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-chxf-fjcf-7fwp
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Github.com/google/fscrypt
Package Ecosystem Go
Published Date
Last Updated

How to Fix GHSA-chxf-fjcf-7fwp

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

github.com/google/fscrypt fixed: 0.3.3 
Upgrade github.com/google/fscrypt to 0.3.3
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 github.com/google/fscrypt

How to Check if You Are Affected

To determine whether your application is affected by GHSA-chxf-fjcf-7fwp, inspect your project dependencies for Github.com/google/fscrypt:

inspect dependencies for github.com/google/fscrypt

Analyze the terminal output to locate any version of Github.com/google/fscrypt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.3), 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 General Security Weakness. In Github.com/google/fscrypt, 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

`fscrypt` through v0.3.2 creates a world-writable directory by default when setting up a filesystem, allowing unprivileged users to exhaust filesystem space. We recommend upgrading to `fscrypt` v0.3.3 or above and adjusting the permissions on existing `fscrypt` metadata directories where applicable. For more details, see [CVE-2022-25326](https://www.cve.org/CVERecord?id=CVE-2022-25326) and https://github.com/google/fscrypt#setting-up-fscrypt-on-a-filesystem.

GHSA-chxf-fjcf-7fwp Affected Github.com/google/fscrypt Versions

1 component(s)
Fixed Versions:
0.3.3
Product / Package Ecosystem Affected Versions Fixed Version
github.com/google/fscrypt
golang/github.com/google/fscrypt
Go
< 0.3.3
0.3.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/google/fscrypt/security/advisories/GHSA-chxf-fjcf-7fwp
Github.com/google/fscrypt Source Repository REPOSITORY
https://github.com/google/fscrypt

Frequently Asked Questions

What is GHSA-chxf-fjcf-7fwp?
GHSA-chxf-fjcf-7fwp is a security vulnerability in Github.com/google/fscrypt involving Possible filesystem space exhaustion by local users under General Security Weakness.
Which Github.com/google/fscrypt versions are affected?
Affected versions include releases prior to 0.3.3 across affected packages: github.com/google/fscrypt.
What version fixes GHSA-chxf-fjcf-7fwp?
Upgrading to 0.3.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/google/fscrypt affected?
Yes, github.com/google/fscrypt is affected in releases prior to 0.3.3. Upgrade your dependency to 0.3.3 or later.
What CWE is associated with GHSA-chxf-fjcf-7fwp?
GHSA-chxf-fjcf-7fwp is classified under General Security Weakness.
How can I check Go dependencies for GHSA-chxf-fjcf-7fwp?
Run the dependency tree command: 'inspect dependencies for github.com/google/fscrypt'. 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-chxf-fjcf-7fwp",
  "modified" : "2022-03-01T21:04:07Z",
  "published" : "2022-03-01T21:04:07Z",
  "aliases" : [ ],
  "summary" : "Possible filesystem space exhaustion by local users",
  "details" : "`fscrypt` through v0.3.2 creates a world-writable directory by default when setting up a filesystem, allowing unprivileged users to exhaust filesystem space. We recommend upgrading to `fscrypt` v0.3.3 or above and adjusting the permissions on existing `fscrypt` metadata directories where applicable.\n\nFor more details, see [CVE-2022-25326](https://www.cve.org/CVERecord?id=CVE-2022-25326) and https://github.com/google/fscrypt#setting-up-fscrypt-on-a-filesystem.\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/google/fscrypt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/google/fscrypt/security/advisories/GHSA-chxf-fjcf-7fwp"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/google/fscrypt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-01T21:04:07Z",
    "nvd_published_at" : null
  }
}