RLSA-2021:4424

    Dashboard / Vulnerabilities / RLSA-2021:4424

    RLSA-2021:4424

    Published: 9 Nov 2021Last Modified: 4 Feb 2026

    Summary: Moderate: openssl security and bug fix update

    Details: OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library. Security Fix(es): * openssl: integer overflow in CipherUpdate (CVE-2021-23840) * openssl: NULL pointer dereference in X509_issuer_and_serial_hash() (CVE-2021-23841) 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 Rocky Linux 8.5 Release Notes linked from the References section.

    References: https://errata.rockylinux.org/RLSA-2021:4424, https://bugzilla.redhat.com/show_bug.cgi?id=1908036, https://bugzilla.redhat.com/show_bug.cgi?id=1930310, https://bugzilla.redhat.com/show_bug.cgi?id=1930324, https://bugzilla.redhat.com/show_bug.cgi?id=1934534, https://bugzilla.redhat.com/show_bug.cgi?id=1934600, https://bugzilla.redhat.com/show_bug.cgi?id=1939637, https://bugzilla.redhat.com/show_bug.cgi?id=1940085, https://bugzilla.redhat.com/show_bug.cgi?id=1965362

    Affected packages

    Package

    Name: openssl

    Purl: pkg:rpm/rocky-linux/openssl?distro=rocky-linux-8-5-legacy&epoch=1

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:1.1.1k-4.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
    RLSA-2021:4424 | CVE-DB