UBUNTU-CVE-2018-12436

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    UBUNTU-CVE-2018-12436

    Published: 15 Jun 2018Last Modified: 20 May 2026
    Upstream:
    CVE-2018-12436

    Summary:

    Details: wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

    References: https://ubuntu.com/security/CVE-2018-12436, https://github.com/wolfSSL/wolfssl/commit/9b9568d500f31f964af26ba8d01e542e1f27e5ca, https://www.wolfssl.com/wolfssh-and-rohnp/, https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/, https://www.cve.org/CVERecord?id=CVE-2018-12436

    Affected packages

    Package

    Name: wolfssl

    Purl: pkg:deb/ubuntu/wolfssl?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.4.8+dfsg-1

    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-2018-12436 | CVE-DB