CVE-2018-5099: Use After Free
A use-after-free vulnerability can occur when the widget listener is holding strong references to browser objects that have previously been freed, resulting in a potentially exploitable crash when these references are used.
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2018-5095
- CVE-2018-5096
- CVE-2018-5097
- CVE-2018-5098
- CVE-2018-5099
- CVE-2018-5102
- CVE-2018-5103
- CVE-2018-5104
- CVE-2018-5117
- CVE-2018-5089
- CVE-2018-5091
- CVE-2018-5092
- CVE-2018-5093
- CVE-2018-5094
- CVE-2018-5100
- CVE-2018-5101
- CVE-2018-5105
- CVE-2018-5106
- CVE-2018-5107
- CVE-2018-5108
- CVE-2018-5109
- CVE-2018-5110
- CVE-2018-5111
- CVE-2018-5112
- CVE-2018-5113
- CVE-2018-5114
- CVE-2018-5115
- CVE-2018-5116
- CVE-2018-5118
- CVE-2018-5119
- CVE-2018-5121
- CVE-2018-5122
- CVE-2018-5090
Frequently Asked Questions
What is CVE-2018-5099?
CVE-2018-5099 is a use-after-free vulnerability that can occur when the widget listener is holding strong references to browser objects that have previously been freed.
Which software is affected by CVE-2018-5099?
CVE-2018-5099 affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox versions up to 58.0.
What is the severity of CVE-2018-5099?
CVE-2018-5099 has a severity rating of 9.8 (critical).
How can I fix CVE-2018-5099?
To fix CVE-2018-5099, update Thunderbird to version 52.6 or later, update Firefox ESR to version 52.6 or later, or update Firefox to version 58.0 or later.
Where can I find more information about CVE-2018-5099?
You can find more information about CVE-2018-5099 on the Mozilla website and Bugzilla.