CVE-2017-15928: Ox Ox Gem Crashes Due To Vulnerability

HIGH
Advisory Identifier: GHSA-pjj4-w39g-pw54
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CVSS 7.5
CWE-20
Published
Advisory Summary

CVE-2017-15928 is a HIGH (CVSS 7.5) ox gem crashes due to vulnerability (CWE-20: Improper Input Validation) affecting Ox libraries in the RubyGems ecosystem. The issue involves ox gem crashes due to a crafted input. Remediation is available by upgrading affected packages to version 2.8.1.

CVE-2017-15928 at a Glance

CVE Identifier CVE-2017-15928
GHSA Identifier GHSA-pjj4-w39g-pw54
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-20: Improper Input Validation
Affected Product Ox
Package Ecosystem RubyGems
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2017-15928

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

ox fixed: 2.8.1 
Upgrade ox to 2.8.1
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 ox

How to Check if You Are Affected

To determine whether your application is affected by CVE-2017-15928, inspect your project dependencies for Ox:

inspect dependencies for ox

Analyze the terminal output to locate any version of Ox in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.8.1), 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-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Ox, 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

In the Ox gem 2.8.0 for Ruby, the process crashes with a segmentation fault when a crafted input is supplied to `parse_obj`. NOTE: the vendor has stated "Ox should handle the error more gracefully" but has not confirmed a security implication.

CVE-2017-15928 Affected Ox Versions

1 component(s)
Fixed Versions:
2.8.1
Product / Package Ecosystem Affected Versions Fixed Version
ox
gem/ox
RubyGems
< 2.8.1
2.8.1

References

NVD — CVE-2017-15928 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-15928
Ox Source Repository REPOSITORY
https://github.com/ohler55/ox/issues/194
Ox Source Repository REPOSITORY
https://github.com/ohler55/ox
Ox Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ox/CVE-2017-15928.yml
rubygems.org/gems/ox/versions/2.... WEB
https://rubygems.org/gems/ox/versions/2.8.0

Frequently Asked Questions

What is CVE-2017-15928?
CVE-2017-15928 is a security vulnerability in Ox involving Ox gem crashes due to a crafted input under CWE-20: Improper Input Validation.
Which Ox versions are affected?
Affected versions include releases prior to 2.8.1 across affected packages: ox.
What version fixes CVE-2017-15928?
Upgrading to 2.8.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ox affected?
Yes, ox is affected in releases prior to 2.8.1. Upgrade your dependency to 2.8.1 or later.
What is the CVSS score of CVE-2017-15928?
CVE-2017-15928 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2017-15928?
CVE-2017-15928 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check RubyGems dependencies for CVE-2017-15928?
Run the dependency tree command: 'inspect dependencies for ox'. 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-pjj4-w39g-pw54",
  "modified" : "2023-01-26T21:23:13Z",
  "published" : "2017-11-21T18:26:40Z",
  "aliases" : [ "CVE-2017-15928" ],
  "summary" : "Ox gem crashes due to a crafted input",
  "details" : "In the Ox gem 2.8.0 for Ruby, the process crashes with a segmentation fault when a crafted input is supplied to `parse_obj`. NOTE: the vendor has stated \"Ox should handle the error more gracefully\" but has not confirmed a security implication.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "ox"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.8.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.8.0"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-15928"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ohler55/ox/issues/194"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ohler55/ox"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ox/CVE-2017-15928.yml"
  }, {
    "type" : "WEB",
    "url" : "https://rubygems.org/gems/ox/versions/2.8.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:49:23Z",
    "nvd_published_at" : null
  }
}