CVE-2019-9796
9.8
CRITICAL
CVSS 3.1
EPSS 0.93%
Description
A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
How to fix CVE-2019-9796
To remediate CVE-2019-9796, upgrade the affected package to a fixed version below.
- —upgrade to 60.6.0esr-1 or later
- —upgrade to 1:60.6.1-1 or later
Is CVE-2019-9796 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 60.6.0esr-1
- from 0, < 1:60.6.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |