Description

A user could create and share a resource with a malicious URI. When the victim opens with menu “Open URI in a new tab” function, the malicious page has access to the window.opener object.

Impact of issue

The newly opened malicious page can for example change the window.opener.location to redirect the user to a phishing page, or call a JavaScript function served by the AppJS on the user behalf for example to try to affect the integrity of the data.

Fix

The code that opens a new window via window.open(); now open the tab with the noopener attribute.

References

• passbolt/passbolt_api@f568e11
• https://github.com/FriendsOfPHP/security-advisories/blob/master/passbolt/passbolt_api/2019-08-07-3.yaml
• https://www.passbolt.com/incidents/20190807_multiple_vulnerabilities