CVE-2021-38493
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3497
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3499
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-38493
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-38493.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 78.14.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 92.0-1 |
| debian | bookworm | fixed | 78.14.0esr-1 |
| debian | bullseye | fixed | 78.14.0esr-1~deb11u1 |
| debian | forky | fixed | 78.14.0esr-1 |
| debian | trixie | fixed | 78.14.0esr-1 |
| rocky | 8 | fixed | |
References
Verify integrity in audit chain (admin only). AS-IS.