Medium severity · published Oct 8, 2020
CVE-2020-12400
When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack
4.7
CVSS
0.3%
EPSS
No
On KEV
Description
When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 80.0 · source: NVD
FM
Firefox Mobile · Mozilla
before 80.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12400
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12400
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1623116
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-36/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-39/
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