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    CVE-2020-12402

    During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.

    Published:Jun 2, 2020
    Last Modified:Nov 21, 2024
    EPS:Jul 9, 2020
    EPSS Score:0.00079
    CVSS Score:4.4

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Openshift Do

    Exploits

    No exploit reference

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
    https://bugzilla.mozilla.org/show_bug.cgi?id=1631597
    https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/
    https://security.gentoo.org/glsa/202007-10
    https://usn.ubuntu.com/4417-1/
    https://usn.ubuntu.com/4417-2/
    https://www.debian.org/security/2020/dsa-4726
    https://www.mozilla.org/security/advisories/mfsa2020-24/
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
    https://bugzilla.mozilla.org/show_bug.cgi?id=1631597
    https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/
    https://security.gentoo.org/glsa/202007-10
    https://usn.ubuntu.com/4417-1/
    https://usn.ubuntu.com/4417-2/
    https://www.debian.org/security/2020/dsa-4726
    https://www.mozilla.org/security/advisories/mfsa2020-24/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High