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actionpack is vulnerable to denial of service via a crafted HTTP Accept header

High severity GitHub Reviewed Published Oct 24, 2017 to the GitHub Advisory Database • Updated Jul 31, 2023

Package

bundler actionpack (RubyGems)

Affected versions

>= 4.2.0, <= 4.2.5.0
<= 3.2.22.0
>= 4.0.0, <= 4.1.14.0

Patched versions

4.2.5.1
3.2.22.1
4.1.14.1

Description

actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header.

References

Published to the GitHub Advisory Database Oct 24, 2017
Reviewed Jun 16, 2020
Last updated Jul 31, 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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

1.128%
(85th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2016-0751

GHSA ID

GHSA-ffpv-c4hm-3x6v

Source code

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