CVE-2019-9796 — Use After Free in Mozilla Firefox
Severity
9.8CRITICALNVD
OSV5.9
EPSS
0.7%
top 27.63%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 26
Latest updateMay 24
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9
Affected Packages11 packages
🔴Vulnerability Details
7GHSA▶
GHSA-43x5-8m6r-mx5q: A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single reg↗2022-05-24
OSV▶
CVE-2019-9796: A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single reg↗2019-04-26