CVE-2024-26142: Actionpack Denial of Service Vulnerability

LOW
Advisory Identifier: GHSA-jjhx-jhvp-74wq
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CWE-1333
Published
Advisory Summary

CVE-2024-26142 is a LOW denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Actionpack libraries in the RubyGems ecosystem. The issue involves rails has possible redos vulnerability in accept header parsing in action dispatch. Remediation is available by upgrading affected packages to version 7.1.3.1.

CVE-2024-26142 at a Glance

CVE Identifier CVE-2024-26142
GHSA Identifier GHSA-jjhx-jhvp-74wq
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Actionpack
Package Ecosystem RubyGems
Published Date
Last Updated

How to Fix CVE-2024-26142

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

actionpack fixed: 7.1.3.1 
Upgrade actionpack to 7.1.3.1
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 actionpack

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-26142, inspect your project dependencies for Actionpack:

inspect dependencies for actionpack

Analyze the terminal output to locate any version of Actionpack in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.1.3.1), 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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Actionpack, 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

# Possible ReDoS vulnerability in Accept header parsing in Action Dispatch There is a possible ReDoS vulnerability in the Accept header parsing routines of Action Dispatch. This vulnerability has been assigned the CVE identifier CVE-2024-26142. Versions Affected: >= 7.1.0, < 7.1.3.1 Not affected: < 7.1.0 Fixed Versions: 7.1.3.1 Impact ------ Carefully crafted Accept headers can cause Accept header parsing in Action Dispatch to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade or use one of the workarounds immediately. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Releases -------- The fixed releases are available at the normal locations. Workarounds ----------- There are no feasible workarounds for this issue. Patches ------- To aid users who aren't able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset. * 7-1-accept-redox.patch - Patch for 7.1 series Credits ------- Thanks [svalkanov](https://hackerone.com/svalkanov) for the report and patch!

CVE-2024-26142 Affected Actionpack Versions

1 component(s)
Fixed Versions:
7.1.3.1
Product / Package Ecosystem Affected Versions Fixed Version
actionpack
gem/actionpack
RubyGems
≥ 7.1.0
< 7.1.3.1
7.1.3.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wq
NVD — CVE-2024-26142 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-26142
Security Fix Commit FIX COMMIT
https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272
discuss.rubyonrails.org/t/possible-redos-vu... WEB
https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946
Actionpack Source Repository REPOSITORY
https://github.com/rails/rails
Actionpack Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26142.yml

Frequently Asked Questions

What is CVE-2024-26142?
CVE-2024-26142 is a security vulnerability in Actionpack involving Rails has possible ReDoS vulnerability in Accept header parsing in Action Dispatch under CWE-1333: Inefficient Regular Expression Complexity.
Which Actionpack versions are affected?
Affected versions include releases prior to 7.1.3.1 across affected packages: actionpack.
What version fixes CVE-2024-26142?
Upgrading to 7.1.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is actionpack affected?
Yes, actionpack is affected in releases prior to 7.1.3.1. Upgrade your dependency to 7.1.3.1 or later.
What CWE is associated with CVE-2024-26142?
CVE-2024-26142 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check RubyGems dependencies for CVE-2024-26142?
Run the dependency tree command: 'inspect dependencies for actionpack'. 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-jjhx-jhvp-74wq",
  "modified" : "2024-03-01T23:30:38Z",
  "published" : "2024-02-27T21:41:09Z",
  "aliases" : [ "CVE-2024-26142" ],
  "summary" : "Rails has possible ReDoS vulnerability in Accept header parsing in Action Dispatch",
  "details" : "# Possible ReDoS vulnerability in Accept header parsing in Action Dispatch\n\nThere is a possible ReDoS vulnerability in the Accept header parsing routines\nof Action Dispatch. This vulnerability has been assigned the CVE identifier\nCVE-2024-26142.\n\nVersions Affected:  >= 7.1.0, < 7.1.3.1\nNot affected:       < 7.1.0\nFixed Versions:     7.1.3.1\n\nImpact\n------\nCarefully crafted Accept headers can cause Accept header parsing in Action\nDispatch to take an unexpected amount of time, possibly resulting in a DoS\nvulnerability.  All users running an affected release should either upgrade or\nuse one of the workarounds immediately.\n\nRuby 3.2 has mitigations for this problem, so Rails applications using Ruby\n3.2 or newer are unaffected.\n\nReleases\n--------\nThe fixed releases are available at the normal locations.\n\nWorkarounds\n-----------\nThere are no feasible workarounds for this issue.\n\nPatches\n-------\nTo aid users who aren't able to upgrade immediately we have provided patches for\nthe two supported release series. They are in git-am format and consist of a\nsingle changeset.\n\n* 7-1-accept-redox.patch - Patch for 7.1 series\n\nCredits\n-------\nThanks [svalkanov](https://hackerone.com/svalkanov) for the report and patch!",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "actionpack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.1.0"
      }, {
        "fixed" : "7.1.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wq"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-26142"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rails/rails"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26142.yml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-27T21:41:09Z",
    "nvd_published_at" : "2024-02-27T16:15:46Z"
  }
}