CVE-2020-6819
critical
KEV
CVSS v3
—
CVSS v2
—
VIR risk
10.0
Description
Mozilla Firefox and Thunderbird contain a race condition vulnerability when running the nsDocShell destructor under certain conditions. The race condition creates a use-after-free vulnerability, causing unspecified impacts.
CISA KEV
- Vendor
- Mozilla
- Product
- Firefox and Thunderbird
- Due date
- 2022-05-03
Predictions
Exploit likelihood
99%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: cisa-kev — https://nvd.nist.gov/vuln/detail/CVE-2020-6819
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-6819
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-6819.html
Vendor advisory: arch — https://security.archlinux.org/ASA-202004-6
Vendor advisory: arch — https://security.archlinux.org/ASA-202004-12
Exploits
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 68.7.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 74.0.1-1 |
| debian | bookworm | fixed | 68.6.1esr-1 |
| debian | bullseye | fixed | 68.6.1esr-1 |
| debian | forky | fixed | 68.6.1esr-1 |
| debian | trixie | fixed | 68.6.1esr-1 |
References
Verify integrity in audit chain (admin only). AS-IS.