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Fat Free CRM vulnerable to Remote Denial of Service via Tasks endpoint

Moderate severity GitHub Reviewed Published Oct 7, 2022 in fatfreecrm/fat_free_crm • Updated Jan 31, 2023

Package

bundler fat_free_crm (RubyGems)

Affected versions

< 0.20.1

Patched versions

0.20.1

Description

Impact

An authenticated user can perform a remote Denial of Service attack against Fat Free CRM.

This vulnerability has been assigned the CVE identifier: CVE-2022-39281

Affected versions: All
Not affected: None
Fixed versions: 0.20.1

All users running an affected release should either upgrade or apply the patch immediately.

Releases

Fixed versions: 0.20.1 and above

Patches

If you are unable to upgrade immediately, you should apply the following patch.

diff --git a/app/models/polymorphic/task.rb b/app/models/polymorphic/task.rb
index d3d5c32c..7cdb24d6 100644
--- a/app/models/polymorphic/task.rb
+++ b/app/models/polymorphic/task.rb
@@ -189,6 +189,7 @@ class Task < ActiveRecord::Base
   #----------------------------------------------------------------------------
   def self.bucket_empty?(bucket, user, view = "pending")
     return false if bucket.blank? || !ALLOWED_VIEWS.include?(view)
+    return false unless Setting.task_bucket.map(&:to_s).include?(bucket.to_s)

     if view == "assigned"
       assigned_by(user).send(bucket).pending.count

Credits

Thanks to @p- for reporting this and working with us to responsibly disclose this vulnerability.

Further information

If you have any questions or comments about this advisory, please Open an issue in GitHub Issue Tracker

References

@steveyken steveyken published to fatfreecrm/fat_free_crm Oct 7, 2022
Published to the GitHub Advisory Database Oct 7, 2022
Reviewed Oct 7, 2022
Published by the National Vulnerability Database Oct 8, 2022
Last updated Jan 31, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.166%
(54th percentile)

Weaknesses

CVE ID

CVE-2022-39281

GHSA ID

GHSA-p75c-5x3h-cxcg

Credits

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