DEBIAN-CVE-2018-0495

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    DEBIAN-CVE-2018-0495

    Published: 13 Jun 2018Last Modified: 1 Sept 2026
    Upstream:
    CVE-2018-0495

    Summary:

    Details: Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, 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://security-tracker.debian.org/tracker/CVE-2018-0495

    Affected packages

    Package

    Name: libgcrypt20

    Purl: pkg:deb/debian/libgcrypt20?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.8.3-1

    Affected versions

    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