CVE-2017-7800
Critical
Description
A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the disconnection operation is finished. This results in an exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedJun 11, 2018
First seenJun 11, 2018
How to fix
Update
- mozilla firefox55.0, 52.3.0 or later
- mozilla thunderbird52.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 55.0, v < 52.3.0 | 55.0, 52.3.0 |
| debian debian_linux | 8.0, 9.0 | — |
| redhat enterprise_linux | 6.0, 7.0 | — |
| redhat enterprise_linux_desktop | 6.0, 7.0 | — |
| redhat enterprise_linux_server | 6.0, 7.0 | — |
| redhat enterprise_linux_server_aus | 7.3, 7.4 | — |
| redhat enterprise_linux_server_eus | 7.3, 7.4, 7.5 | — |
| redhat enterprise_linux_workstation | 6.0, 7.0 | — |
| mozilla thunderbird | v < 52.3.0 | 52.3.0 |
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