The content security policy (CSP) sandbox directive in Thunderbird < 52.4 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.
The content security policy (CSP) sandbox directive in Thunderbird < 52.4 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.
https://www.mozilla.org/en-US/security/advisories/mfsa2017-23/#CVE-2017-7823 https://bugzilla.mozilla.org/show_bug.cgi?id=1396320
Vulmon