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Cross-Site Scripting in jquery

Moderate severity GitHub Reviewed Published Sep 1, 2020 to the GitHub Advisory Database • Updated Jul 10, 2023

Package

nuget jQuery (NuGet)

Affected versions

<= 1.8.3

Patched versions

1.9.0
npm jquery (npm)
<= 1.8.3
1.9.0
bundler jquery-rails (RubyGems)
< 2.2.0
2.2.0
maven org.webjars.npm:jquery (Maven)
<= 1.8.3
1.9.0

Description

Affected versions of jquery are vulnerable to cross-site scripting. This occurs because the main jquery function uses a regular expression to differentiate between HTML and selectors, but does not properly anchor the regular expression. The result is that jquery may interpret HTML as selectors when given certain inputs, allowing for client side code execution.

Proof of Concept

$("#log").html(
    $("element[attribute='<img src=\"x\" onerror=\"alert(1)\" />']").html()
);

Recommendation

Update to version 1.9.0 or later.

References

Published by the National Vulnerability Database Jan 18, 2018
Reviewed Aug 31, 2020
Published to the GitHub Advisory Database Sep 1, 2020
Last updated Jul 10, 2023

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:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.635%
(79th percentile)

Weaknesses

CVE ID

CVE-2012-6708

GHSA ID

GHSA-2pqj-h3vj-pqgw

Source code

Credits

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