VDB
DEBIAN-CVE-2020-12420
DEBIAN-CVE-2020-12420
PUBLISHED
CVSS 8.800000190734863 HIGH
Record from OSV · Published July 9, 2020
When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| firefox-esr | Debian:13 | 68.10.0esr-1 |
| thunderbird | Debian:13 | 1:68.10.0-1 |
| thunderbird | Debian:14 | 1:68.10.0-1 |
| firefox-esr | Debian:14 | 68.10.0esr-1 |
| firefox-esr | Debian:12 | 68.10.0esr-1 |
| thunderbird | Debian:12 | 1:68.10.0-1 |
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
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | firefox-esr | 0 |
| Debian:13 | thunderbird | 0 |
| Debian:14 | thunderbird | 0 |
| Debian:14 | firefox-esr | 0 |
| Debian:12 | firefox-esr | 0 |
| Debian:12 | thunderbird | 0 |
Timeline
- Jul 9, 2020 CVE Published
- Oct 26, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln DEBIAN-CVE-2020-12420
vulnetix vdb fixes DEBIAN-CVE-2020-12420Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/DEBIAN-CVE-2020-12420/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart