CVE-2013-0262: Rack Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-85r7-w5mv-c849
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CWE-22
Published
Advisory Summary

CVE-2013-0262 is a MODERATE path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Rack libraries in the RubyGems ecosystem. The issue involves rack vulnerable to path traversal. Remediation is available by upgrading affected packages to version 1.5.2, 1.4.5.

CVE-2013-0262 at a Glance

CVE Identifier CVE-2013-0262
GHSA Identifier GHSA-85r7-w5mv-c849
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Rack
Package Ecosystem RubyGems
Published Date
Last Updated

How to Fix CVE-2013-0262

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: 1.5.2 
Upgrade rack to 1.5.2
rack fixed: 1.4.5 
Upgrade rack to 1.4.5
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-2013-0262, 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 1.5.2), 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 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

`rack/file.rb` (`Rack::File`) in Rack 1.5.x before 1.5.2 and 1.4.x before 1.4.5 allows attackers to access arbitrary files outside the intended root directory via a crafted `PATH_INFO` environment variable, probably a directory traversal vulnerability that is remotely exploitable, aka "symlink path traversals."

CVE-2013-0262 Affected Rack Versions

2 component(s)
Fixed Versions:
1.5.21.4.5
Product / Package Ecosystem Affected Versions Fixed Version
rack
gem/rack
RubyGems
≥ 1.5.0
< 1.5.2
1.5.2
rack
gem/rack
RubyGems
≥ 1.4.0
< 1.4.5
1.4.5

References

NVD — CVE-2013-0262 NVD
https://nvd.nist.gov/vuln/detail/CVE-2013-0262
Security Fix Commit FIX COMMIT
https://github.com/rack/rack/commit/6f237e4c9fab649d3750482514f0fde76c56ab30
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=909071
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=909072
Rack Source Repository REPOSITORY
https://gist.github.com/rentzsch/4736940
Rack Source Repository REPOSITORY
https://github.com/rack/rack
Rack Source Repository REPOSITORY
https://github.com/rack/rack/blob/master/lib/rack/file.rb#L56
Rack Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2013-0262.yml
groups.google.com/forum/ WEB
https://groups.google.com/forum/#!msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ
groups.google.com/forum/ WEB
https://groups.google.com/forum/#!msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ
lists.opensuse.org/opensuse-updates/20... WEB
http://lists.opensuse.org/opensuse-updates/2013-03/msg00048.html

Frequently Asked Questions

What is CVE-2013-0262?
CVE-2013-0262 is a security vulnerability in Rack involving Rack Vulnerable to Path Traversal under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Rack versions are affected?
Affected versions include releases prior to 1.5.2, 1.4.5 across affected packages: rack.
What version fixes CVE-2013-0262?
Upgrading to 1.5.2, 1.4.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rack affected?
Yes, rack is affected in releases prior to 1.5.2, 1.4.5. Upgrade your dependency to 1.5.2, 1.4.5 or later.
What CWE is associated with CVE-2013-0262?
CVE-2013-0262 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 RubyGems dependencies for CVE-2013-0262?
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-85r7-w5mv-c849",
  "modified" : "2023-08-25T23:30:15Z",
  "published" : "2017-10-24T18:33:37Z",
  "aliases" : [ "CVE-2013-0262" ],
  "summary" : "Rack Vulnerable to Path Traversal",
  "details" : "`rack/file.rb` (`Rack::File`) in Rack 1.5.x before 1.5.2 and 1.4.x before 1.4.5 allows attackers to access arbitrary files outside the intended root directory via a crafted `PATH_INFO` environment variable, probably a directory traversal vulnerability that is remotely exploitable, aka \"symlink path traversals.\"",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.5.0"
      }, {
        "fixed" : "1.5.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.4.0"
      }, {
        "fixed" : "1.4.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2013-0262"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rack/rack/commit/6f237e4c9fab649d3750482514f0fde76c56ab30"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=909071"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=909072"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/rentzsch/4736940"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rack/rack"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rack/rack/blob/master/lib/rack/file.rb#L56"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2013-0262.yml"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/forum/#!msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/forum/#!msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ"
  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-updates/2013-03/msg00048.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:24:29Z",
    "nvd_published_at" : "2013-02-08T20:55:00Z"
  }
}