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Go package

filippo.io/nistec

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. High, CVSS 7.5GoPublished

    nistec has Incorrect Calculation in Multiplication of unreduced P-256 scalars

    CVE-2023-24533 · GHSA-f6hc-9g49-xmx7

    Affected
    • Go filippo.io/nistec < 0.0.2
    Fixed in
    0.0.2· Vendor fix available
    Issue
    Multiplication of certain unreduced P-256 scalars produce incorrect results. There are no protocols known at this time that can be attacked due to this. From the fix commit notes: Unlike the rest of nistec, the P-256 assembly doesn't use complete addition formulas, meaning that p256PointAdd[Affine]Asm won't return the correct value if the two inputs are equal. This was (undocumentedly) ignored in the scalar multiplication loops because as long as the input point is not the identity and the scalar is lower than the order of the group, the addition inputs can't be the same. As part of the math/big rewrite, we went however from always reducing the scalar to only checking its length, under the incorrect assumption that the scalar multiplication loop didn't require reduction.

    Recommended action: Upgrade to 0.0.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →