Out-of-Bounds Read Vulnerability in Pseudo-Elements Styling

CVE-2017-7753 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:P

An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

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