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yajl-ruby gem Denial of Service vulnerability

High severity GitHub Reviewed Published Nov 28, 2017 to the GitHub Advisory Database • Updated Nov 5, 2023

Package

bundler yajl-ruby (RubyGems)

Affected versions

< 1.3.1

Patched versions

1.3.1

Description

In the yajl-ruby gem 1.3.0 for Ruby, when a crafted JSON file is supplied to Yajl::Parser.new.parse, the whole ruby process crashes with a SIGABRT in the yajl_string_decode function in yajl_encode.c. This results in the whole ruby process terminating and potentially a denial of service.

References

Published by the National Vulnerability Database Nov 3, 2017
Published to the GitHub Advisory Database Nov 28, 2017
Reviewed Jun 16, 2020
Last updated Nov 5, 2023

Severity

High

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
None
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:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.985%
(84th percentile)

Weaknesses

CVE ID

CVE-2017-16516

GHSA ID

GHSA-wwh7-4jw9-33x6

Source code

Credits

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