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CVE-2016-9904 An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another…

Description

An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as usernames embedded in JavaScript code, across websites. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.

Affected products and versions

Product Affected versions Fixed in
Firefox 50.1 earliest → < 50.1 50.1
Firefox ESR 45.6 earliest → < 45.6 45.6
Thunderbird 45.6 earliest → < 45.6 45.6

References

Timeline

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