UBUNTU-CVE-2020-15522

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    UBUNTU-CVE-2020-15522

    Published: 20 May 2021Last Modified: 19 Mar 2026
    Upstream:
    CVE-2020-15522

    Summary:

    Details: Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.

    References: https://ubuntu.com/security/CVE-2020-15522, https://github.com/bcgit/bc-java/wiki/CVE-2020-15522, https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522, https://www.bouncycastle.org/releasenotes.html, https://www.cve.org/CVERecord?id=CVE-2020-15522

    Affected packages

    Package

    Name: bouncycastle

    Purl: pkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.49+dfsg-3ubuntu1

    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
    UBUNTU-CVE-2020-15522 | CVE-DB