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XSS in jQuery as used in Drupal, Backdrop CMS, and other products

Moderate severity GitHub Reviewed Published Apr 26, 2019 to the GitHub Advisory Database • Updated Nov 5, 2024

Package

pip django (pip)

Affected versions

>= 2.0a1, < 2.1.9
>= 2.2a1, < 2.2.2

Patched versions

2.1.9
2.2.2
nuget jQuery (NuGet)
>= 1.1.4, < 3.4.0
3.4.0
npm jquery (npm)
>= 1.1.4, < 3.4.0
3.4.0
bundler jquery-rails (RubyGems)
< 4.3.4
4.3.4
composer maximebf/debugbar (Composer)
< 1.19.0
1.19.0
maven org.webjars.npm:jquery (Maven)
>= 1.1.4, < 3.4.0
3.4.0

Description

jQuery from 1.1.4 until 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source object contained an enumerable __proto__ property, it could extend the native Object.prototype.

References

Published by the National Vulnerability Database Apr 20, 2019
Reviewed Apr 26, 2019
Published to the GitHub Advisory Database Apr 26, 2019
Last updated Nov 5, 2024

Severity

Moderate

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
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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:R/S:C/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(90th percentile)

Weaknesses

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Learn more on MITRE.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. Learn more on MITRE.

CVE ID

CVE-2019-11358

GHSA ID

GHSA-6c3j-c64m-qhgq

Source code

Credits

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