CVE-2020-12387
critical
CVSS v3
—
CVSS v2
—
VIR risk
9.5
Description
A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-12387
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-12387.html
Vendor advisory: arch — https://security.archlinux.org/ASA-202005-3
Vendor advisory: arch — https://security.archlinux.org/ASA-202005-7
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 68.8.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 76.0-1 |
| debian | bookworm | fixed | 68.8.0esr-1 |
| debian | bullseye | fixed | 68.8.0esr-1 |
| debian | forky | fixed | 68.8.0esr-1 |
| debian | trixie | fixed | 68.8.0esr-1 |
References
Verify integrity in audit chain (admin only). AS-IS.