CVE-2020-12400
MediumCVSS 4.7Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
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.
Risk Assessment
An attacker could use timing measurements to recover sensitive data, such as cryptographic keys, potentially leading to confidentiality breaches.
Recommendation
Update Firefox and Firefox for Android to version 80 or later to fix the vulnerability.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS