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Vulnerability details: VCID-985n-34bg-aaaq
Vulnerability ID VCID-985n-34bg-aaaq
Aliases CVE-2020-12401
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-203 Observable Discrepancy
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-12401.html
rhas Moderate https://access.redhat.com/errata/RHSA-2020:4076
rhas Moderate https://access.redhat.com/errata/RHSA-2021:0538
cvssv3 4.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12401.json
epss 0.00046 https://api.first.org/data/v1/epss?cve=CVE-2020-12401
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epss 0.00167 https://api.first.org/data/v1/epss?cve=CVE-2020-12401
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1851294
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12401
generic_textual Medium https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes
cvssv2 1.9 https://nvd.nist.gov/vuln/detail/CVE-2020-12401
cvssv3 4.7 https://nvd.nist.gov/vuln/detail/CVE-2020-12401
cvssv3.1 4.7 https://nvd.nist.gov/vuln/detail/CVE-2020-12401
generic_textual Medium https://ubuntu.com/security/notices/USN-4455-1
generic_textual Medium https://ubuntu.com/security/notices/USN-4474-1
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-36
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2020-36/#CVE-2020-12401
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-39
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-12401.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12401.json
https://api.first.org/data/v1/epss?cve=CVE-2020-12401
https://bugzilla.mozilla.org/show_bug.cgi?id=1631573
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12401
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes
https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
https://ubuntu.com/security/notices/USN-4455-1
https://ubuntu.com/security/notices/USN-4474-1
https://www.mozilla.org/en-US/security/advisories/mfsa2020-36/#CVE-2020-12401
https://www.mozilla.org/security/advisories/mfsa2020-36/
https://www.mozilla.org/security/advisories/mfsa2020-39/
1851294 https://bugzilla.redhat.com/show_bug.cgi?id=1851294
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*
CVE-2020-12401 https://nvd.nist.gov/vuln/detail/CVE-2020-12401
GLSA-202008-08 https://security.gentoo.org/glsa/202008-08
mfsa2020-36 https://www.mozilla.org/en-US/security/advisories/mfsa2020-36
mfsa2020-39 https://www.mozilla.org/en-US/security/advisories/mfsa2020-39
RHSA-2020:4076 https://access.redhat.com/errata/RHSA-2020:4076
RHSA-2021:0538 https://access.redhat.com/errata/RHSA-2021:0538
RHSA-2021:0949 https://access.redhat.com/errata/RHSA-2021:0949
USN-4455-1 https://usn.ubuntu.com/4455-1/
USN-4474-1 https://usn.ubuntu.com/4474-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12401.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12401
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12401
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12401
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.18051
EPSS Score 0.00046
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.