Versions mentioned in the description apply to the upstream
Remediation section below for
Debian:10 relevant versions.
When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger an out-of-bounds read in the Network Security Services (NSS) library. This could lead to information disclosure. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
nss to version 2:3.42.1-1+deb10u1 or higher.