CVE-2020-12402 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  4.4 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html Third Party Advisory 
https://bugzilla.mozilla.org/show_bug.cgi?id=1631597 Issue Tracking  Permissions Required  Vendor Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/ Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/ Third Party Advisory 
https://security.gentoo.org/glsa/202007-10 Third Party Advisory 
https://usn.ubuntu.com/4417-1/ Third Party Advisory 
https://usn.ubuntu.com/4417-2/ Third Party Advisory 
https://www.debian.org/security/2020/dsa-4726 Third Party Advisory 
https://www.mozilla.org/security/advisories/mfsa2020-24/ Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-327 Use of a Broken or Risky Cryptographic Algorithm cwe source acceptance level NIST  

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Change History

12 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-12402
NVD Published Date:
07/09/2020
NVD Last Modified:
08/04/2020
Source:
MITRE