vulnerability
MFSA2017-11 Firefox: Security vulnerabilities fixed in Firefox ESR 45.9 (CVE-2017-5447)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:N/A:P) | Apr 19, 2017 | Apr 20, 2017 | Aug 11, 2025 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
Apr 19, 2017
Added
Apr 20, 2017
Modified
Aug 11, 2025
Description
An out-of-bounds read during the processing of glyph widths during text layout. This results in a potentially exploitable crash and could allow an attacker to read otherwise inaccessible memory. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
Solution
mozilla-firefox-esr-upgrade-45_9
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