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CVE-2020-12401

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Date: October 8, 2020

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.

Language: C

Severity Score

Related Resources (10)

https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
https://www.mozilla.org/security/advisories/mfsa2020-39/
https://nvd.nist.gov/vuln/detail/CVE-2020-12401
https://access.redhat.com/security/cve/CVE-2020-12401
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12401
https://security-tracker.debian.org/tracker/CVE-2020-12401
https://security.alpinelinux.org/vuln/CVE-2020-12401
https://bugzilla.mozilla.org/show_bug.cgi?id=1631573
https://www.mozilla.org/security/advisories/mfsa2020-36/
https://www.mend.io/vulnerability-database/CVE-2020-12401

Severity Score

Weakness Type (CWE)

Use of a Broken or Risky Cryptographic Algorithm

CWE-327

Observable Discrepancy

CWE-203

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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