VDB
CVE-2021-23997
CVE-2021-23997
PUBLISHED
CVSS 8.800000190734863 HIGH
Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.
EPSS 0.82% · 56.6th percentile
Risk Scores
CVSS 3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
0.82%
56.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | mozjs68 | 68.5.0-1~fakesync, 0, 68.6.0-1ubuntu1 |
| Ubuntu:16.04:LTS | firefox | 59.0+build5-0ubuntu0.16.04.1, 0, 41.0.2+build2-0ubuntu1 |
| Ubuntu:22.04:LTS | mozjs78 | 78.15.0-2, 0, 78.13.0-1 |
| Ubuntu:20.04:LTS | mozjs52 | 0, 52.9.1-1ubuntu3, 52.9.1-1build1 |
| Ubuntu:18.04:LTS | mozjs52 | 52.9.1-0ubuntu0.18.04.1, 0, 52.3.1-7fakesync1 |
| Ubuntu:18.04:LTS | mozjs38 | *, 38.8.0~repack1-0ubuntu3, 38.8.0~repack1-0ubuntu4 |
| Ubuntu:18.04:LTS | firefox | 0, 56.0+build6-0ubuntu1, 57.0.1+build2-0ubuntu1 |
| Ubuntu:20.04:LTS | firefox | 80.0+build2-0ubuntu0.20.04.1, 81.0.2+build1-0ubuntu0.20.04.1, 82.0.2+build1-0ubuntu0.20.04.1 |
Timeline
- Apr 19, 2021 CVE Published
- Jun 25, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 25, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 25, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jun 27, 2022 EPSS Score
- Aug 28, 2022 EPSS Score
- Oct 28, 2022 EPSS Score
- Dec 29, 2022 EPSS Score
References
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-23997 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-23997 third-party-advisory
- https://ubuntu.com/security/CVE-2021-23997 advisory
- https://ubuntu.com/security/notices/USN-4926-1 advisory