QID 239793

Date Published: 2021-11-10

QID 239793: Red Hat Update for edk2 security (RHSA-2021:4198)

edk (embedded development kit) is a project to enable uefi support for virtual machines.
This package contains a sample 64-bit uefi firmware for qemu and kvm.

Security Fix(es):
  • openssl: integer overflow in cipherupdate (cve-2021-23840)
  • openssl: null pointer dereference in x509_issuer_and_serial_hash() (cve-2021-23841)

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for arm 64 8 aarch64



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Upgrade to the latest packages which contain a patch.

    Refer to Refer to :
    Applying Package Updates to RHEL system     for details.

    Refer to Red Hat security advisory RHSA-2021:4198 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239793

    CVE-2021-23840 | CVE-2021-23841 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4198 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4198
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