CVE-2017-7788

Public Exploit

Description

When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy (CSP) as it should unless the sandbox attribute included "allow-same-origin". This vulnerability affects Firefox < 55.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.85% Top 15%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1073952 issue tracking exploit vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/ vendor advisory
http://www.securityfocus.com/bid/100379 vdb entry third party advisory
http://www.securitytracker.com/id/1039124 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-7788?
CVE-2017-7788 has been scored as a critical severity vulnerability.
How to fix CVE-2017-7788?
To fix CVE-2017-7788, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7788 being actively exploited in the wild?
It is possible that CVE-2017-7788 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7788?
CVE-2017-7788 affects Mozilla Firefox.
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