CVE-2017-7788

CRITICAL

Firefox < 55.0 - Content Security Policy Bypass via Sandboxed Iframe with srcdoc

Title source: llm
STIX 2.1

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.

References (4)

Core 4
Core References
Exploit, Issue Tracking, Vendor Advisory x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1073952
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-18/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/100379
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039124

Scores

CVSS v3 9.8
EPSS 0.0192
EPSS Percentile 83.6%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-74
Status published
Products (1)
mozilla/firefox < 55.0
Published Jun 11, 2018
Tracked Since Feb 18, 2026