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    CVE-2017-8932

    A bug in the standard library ScalarMult implementation of curve P-256 for amd64 architectures in Go before 1.7.6 and 1.8.x before 1.8.2 causes incorrect results to be generated for specific input points. An adaptive attack can be mounted to progressively extract the scalar input to ScalarMult by submitting crafted points and observing failures to the derive correct output. This leads to a full key recovery attack against static ECDH, as used in popular JWT libraries.

    Published:May 23, 2017
    Last Modified:Apr 20, 2025
    EPS:Jul 6, 2017
    EPSS Score:0.02685
    CVSS Score:5.9

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Golang
    Product
    Go
    Vendor
    Novell
    Product
    Suse Package Hub For Suse Linux Enterprise
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-682 Incorrect Calculation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-128 Integer Attacks
    CAPEC-129 Pointer Manipulation

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    References

    http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html
    http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html
    https://access.redhat.com/errata/RHSA-2017:1859
    https://bugzilla.redhat.com/show_bug.cgi?id=1455191
    https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c
    https://github.com/golang/go/issues/20040
    https://go-review.googlesource.com/c/41070/
    https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/
    http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html
    http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html
    https://access.redhat.com/errata/RHSA-2017:1859
    https://bugzilla.redhat.com/show_bug.cgi?id=1455191
    https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c
    https://github.com/golang/go/issues/20040
    https://go-review.googlesource.com/c/41070/
    https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/

    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