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Low severity vulnerability that affects smartbanner.js

Low severity GitHub Reviewed Published Sep 11, 2019 in ain/smartbanner.js • Updated Jan 9, 2023

Package

npm smartbanner.js (npm)

Affected versions

< 1.14.1

Patched versions

1.14.1

Description

rel noopener vulnerability

Impact

Clicking on smartbanner View link and navigating to 3rd party page leaves window.opener exposed. It may allow hostile 3rd parties to abuse window.opener, e.g. by redirection or injection on the original page with smartbanner.

Patches

rel="noopener" is automatically populated to links as of v1.14.1 which is a recommended upgrade to resolve the vulnerability.

Workarounds

If you can not upgrade to v1.14.1:

  1. Ensure View link is only taking users to App Store or Google Play Store where security is guarded by respective app store security teams

  2. If View link is going to a 3rd party page, limit smartbanner.js to be used on iOS that decreases the scope of the vulnerability since as of Safari 12.1, rel="noopener" is imposed on all target="_blank" links.

    Following combination of smartbanner meta tags can be used to achieve the above:

    <meta name="smartbanner:enabled-platforms" content="none">
    <meta name="smartbanner:include-user-agent-regex" content="Mobile.*Safari">

References

For more information

If you have any questions or comments about this advisory:

References

@ain ain published to ain/smartbanner.js Sep 11, 2019
Published to the GitHub Advisory Database Sep 13, 2019
Reviewed Jun 16, 2020
Last updated Jan 9, 2023

Severity

Low

Weaknesses

No CWEs

CVE ID

No known CVE

GHSA ID

GHSA-9mrq-cjgh-32g2

Source code

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