ALSA-2021:4409

    Dashboard / Vulnerabilities / ALSA-2021:4409

    ALSA-2021:4409

    Published: 9 Nov 2021Last Modified: 4 Feb 2026

    Summary: Moderate: libgcrypt security and bug fix update

    Details: The libgcrypt library provides general-purpose implementations of various cryptographic algorithms. Security Fix(es): * libgcrypt: mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm (CVE-2021-33560) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

    References: https://errata.almalinux.org/8/ALSA-2021-4409.html, https://vulners.com/cve/CVE-2021-33560

    Affected packages

    Package

    Name: libgcrypt

    Purl: pkg:rpm/almalinux/libgcrypt

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.8.5-6.el8

    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
    ALSA-2021:4409 | CVE-DB