Firefox ESR and 1 other: During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar…
CVE-2020-12401 is fixed in 16 products on 2 platforms, first by libnss3 2:3.35-2ubuntu2.11, released August 4, 2020. It is not reported as exploited. Patch Radar priority: Routine.
During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox < 80 and Firefox for Android < 80.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 91.0 | Mozilla Firefox ESR (en-US) 91.0 | Aug 4, 2021 |
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 80.0+build2-0ubuntu0.18.04.1 | firefox 80.0+build2-0ubuntu0.18.04.1 | Aug 25, 2020 |
| firefox · Ubuntu 20.04 LTS (focal) | 80.0+build2-0ubuntu0.20.04.1 | firefox 80.0+build2-0ubuntu0.20.04.1 | Aug 25, 2020 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 80.0+build2-0ubuntu0.18.04.1 | firefox-geckodriver 80.0+build2-0ubuntu0.18.04.1 | Aug 25, 2020 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 80.0+build2-0ubuntu0.20.04.1 | firefox-geckodriver 80.0+build2-0ubuntu0.20.04.1 | Aug 25, 2020 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 80.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 80.0+build2-0ubuntu0.18.04.1 | Aug 25, 2020 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 80.0+build2-0ubuntu0.20.04.1 | firefox-mozsymbols 80.0+build2-0ubuntu0.20.04.1 | Aug 25, 2020 |
| libnss3 · Ubuntu 18.04.6 LTS (bionic) | 2:3.35-2ubuntu2.11 | libnss3 2:3.35-2ubuntu2.11 | Aug 4, 2020 |
| libnss3 · Ubuntu 20.04 LTS (focal) | 2:3.49.1-1ubuntu1.4 | libnss3 2:3.49.1-1ubuntu1.4 | Aug 4, 2020 |
| libnss3-tools · Ubuntu 18.04.6 LTS (bionic) | 2:3.35-2ubuntu2.11 | libnss3-tools 2:3.35-2ubuntu2.11 | Aug 4, 2020 |
| libnss3-tools · Ubuntu 20.04 LTS (focal) | 2:3.49.1-1ubuntu1.4 | libnss3-tools 2:3.49.1-1ubuntu1.4 | Aug 4, 2020 |
| nss · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-devel · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-softokn · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-softokn-devel · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-softokn-freebl · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-softokn-freebl-devel · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-sysinit · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-tools · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-util · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
| nss-util-devel · RHEL 8 | 0:3.53.1-17.el8_3 | RHSA-2021:0538 | Feb 16, 2021 |
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