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MFSA2017-22 Firefox: Security vulnerabilities fixed in Firefox ESR 52.4 (CVE-2017-7823)

Severity CVSS Published Added Modified
4 (AV:N/AC:M/Au:N/C:N/I:P/A:N) September 28, 2017 September 29, 2017 August 13, 2018

Description

The content security policy (CSP) "sandbox" directive did not create a unique origin for the document, causing it to behave as if the "allow-same-origin" keyword were always specified. This could allow a Cross-Site Scripting (XSS) attack to be launched from unsafe content. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

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References

Solution

mozilla-firefox-esr-upgrade-52_4

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