{"containers":{"cna":{"affected":[{"product":"Firefox ESR","vendor":"Mozilla","versions":[{"lessThan":"52.2","status":"affected","version":"unspecified","versionType":"custom"}]},{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThan":"54","status":"affected","version":"unspecified","versionType":"custom"}]}],"datePublic":"2017-06-13T00:00:00.000Z","descriptions":[{"lang":"en","value":"The Mozilla Maintenance Service \"helper.exe\" application creates a temporary directory writable by non-privileged users. When this is combined with creation of a junction (a form of symbolic link), protected files in the target directory of the junction can be deleted by the Mozilla Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. 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