vulnerability
MFSA2017-21 Firefox: Security vulnerabilities fixed in Firefox 56 (CVE-2017-7813)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:N/A:P) | Jun 11, 2018 | Jul 12, 2018 | Aug 11, 2025 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
Jun 11, 2018
Added
Jul 12, 2018
Modified
Aug 11, 2025
Description
Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.
Solution
mozilla-firefox-upgrade-56_0
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