CVE-2020-12402
Description
During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-12402
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2020:3280
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-12402.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 2:3.53.1-1 |
| debian | bullseye | fixed | 2:3.53.1-1 |
| debian | forky | fixed | 2:3.53.1-1 |
| debian | sid | fixed | 2:3.53.1-1 |
| debian | trixie | fixed | 2:3.53.1-1 |
References
Verify integrity in audit chain (admin only). AS-IS.