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:
-
Ensure View link is only taking users to App Store or Google Play Store where security is guarded by respective app store security teams
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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
rel noopener vulnerability
Impact
Clicking on smartbanner View link and navigating to 3rd party page leaves
window.openerexposed. It may allow hostile 3rd parties to abusewindow.opener, e.g. by redirection or injection on the original page with smartbanner.Patches
rel="noopener"is automatically populated to links as ofv1.14.1which is a recommended upgrade to resolve the vulnerability.Workarounds
If you can not upgrade to
v1.14.1:Ensure View link is only taking users to App Store or Google Play Store where security is guarded by respective app store security teams
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 alltarget="_blank"links.Following combination of smartbanner meta tags can be used to achieve the above:
References
For more information
If you have any questions or comments about this advisory:
References