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CVE-2017-7803 When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored

Description

When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the incorrect enforcement of CSP. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Affected products and versions

Product Affected versions Fixed in
Thunderbird 52.3 earliest → < 52.3 52.3
Firefox ESR 52.3 earliest → < 52.3 52.3
Firefox 55 earliest → < 55 55

References

Timeline

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