CVE-2015-3225: Rack Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-rgr4-9jh5-j4j6
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Advisory Summary

CVE-2015-3225 is a MODERATE denial of service vulnerability (General Security Weakness) affecting Rack libraries in the RubyGems ecosystem. The issue involves rack vulnerable to denial of service via large parameter depth request. Remediation is available by upgrading affected packages to version 1.5.4, 1.6.2, 1.4.6.

CVE-2015-3225 at a Glance

CVE Identifier CVE-2015-3225
GHSA Identifier GHSA-rgr4-9jh5-j4j6
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Rack
Package Ecosystem RubyGems
Published Date
Last Updated

How to Fix CVE-2015-3225

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

rack fixed: 1.5.4 
Upgrade rack to 1.5.4
rack fixed: 1.6.2 
Upgrade rack to 1.6.2
rack fixed: 1.4.6 
Upgrade rack to 1.4.6
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 rack

How to Check if You Are Affected

To determine whether your application is affected by CVE-2015-3225, inspect your project dependencies for Rack:

inspect dependencies for rack

Analyze the terminal output to locate any version of Rack in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.4), 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 Rack, 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

lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products, allows remote attackers to cause a denial of service (SystemStackError) via a request with a large parameter depth.

CVE-2015-3225 Affected Rack Versions

3 component(s)
Fixed Versions:
1.5.41.6.21.4.6
Product / Package Ecosystem Affected Versions Fixed Version
rack
gem/rack
RubyGems
≥ 1.5.0
< 1.5.4
1.5.4
rack
gem/rack
RubyGems
≥ 1.6.0
< 1.6.2
1.6.2
rack
gem/rack
RubyGems
≥ 1.4.0
< 1.4.6
1.4.6

References

NVD — CVE-2015-3225 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-3225
Rack Source Repository REPOSITORY
https://github.com/rack/rack
Rack Source Repository REPOSITORY
https://github.com/rack/rack/blob/master/HISTORY.md
Rack Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2015-3225.yml
groups.google.com/forum/ WEB
https://groups.google.com/forum/#!topic/ruby-security-ann/gcUbICUmKMc
lists.fedoraproject.org/pipermail/package-a... WEB
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164173.html
lists.fedoraproject.org/pipermail/package-a... WEB
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165180.html
lists.opensuse.org/opensuse-updates/20... WEB
http://lists.opensuse.org/opensuse-updates/2015-07/msg00040.html
lists.opensuse.org/opensuse-updates/20... WEB
http://lists.opensuse.org/opensuse-updates/2015-07/msg00043.html
lists.opensuse.org/opensuse-updates/20... WEB
http://lists.opensuse.org/opensuse-updates/2015-07/msg00044.html
Rack Security Information SECURITY
http://openwall.com/lists/oss-security/2015/06/16/14
rhn.redhat.com/errata/rhsa-2015-22... WEB
http://rhn.redhat.com/errata/RHSA-2015-2290.html
Rack Security Information SECURITY
http://www.debian.org/security/2015/dsa-3322

Frequently Asked Questions

What is CVE-2015-3225?
CVE-2015-3225 is a security vulnerability in Rack involving Rack vulnerable to Denial of Service via large parameter depth request under General Security Weakness.
Which Rack versions are affected?
Affected versions include releases prior to 1.5.4, 1.6.2, 1.4.6 across affected packages: rack.
What version fixes CVE-2015-3225?
Upgrading to 1.5.4, 1.6.2, 1.4.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rack affected?
Yes, rack is affected in releases prior to 1.5.4, 1.6.2, 1.4.6. Upgrade your dependency to 1.5.4, 1.6.2, 1.4.6 or later.
What CWE is associated with CVE-2015-3225?
CVE-2015-3225 is classified under General Security Weakness.
How can I check RubyGems dependencies for CVE-2015-3225?
Run the dependency tree command: 'inspect dependencies for rack'. 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-rgr4-9jh5-j4j6",
  "modified" : "2023-03-14T21:47:07Z",
  "published" : "2017-10-24T18:33:36Z",
  "aliases" : [ "CVE-2015-3225" ],
  "summary" : "Rack vulnerable to Denial of Service via large parameter depth request",
  "details" : "lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products, allows remote attackers to cause a denial of service (SystemStackError) via a request with a large parameter depth.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.5.0"
      }, {
        "fixed" : "1.5.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.6.0"
      }, {
        "fixed" : "1.6.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.4.0"
      }, {
        "fixed" : "1.4.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-3225"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rack/rack"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rack/rack/blob/master/HISTORY.md"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2015-3225.yml"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/forum/#!topic/ruby-security-ann/gcUbICUmKMc"
  }, {
    "type" : "WEB",
    "url" : "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164173.html"
  }, {
    "type" : "WEB",
    "url" : "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165180.html"
  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-updates/2015-07/msg00040.html"
  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-updates/2015-07/msg00043.html"
  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-updates/2015-07/msg00044.html"
  }, {
    "type" : "WEB",
    "url" : "http://openwall.com/lists/oss-security/2015/06/16/14"
  }, {
    "type" : "WEB",
    "url" : "http://rhn.redhat.com/errata/RHSA-2015-2290.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2015/dsa-3322"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:54:48Z",
    "nvd_published_at" : null
  }
}