QID 239823

Date Published: 2021-11-10

QID 239823: Red Hat Update for Open Secure Sockets Layer (OpenSSL) (RHSA-2021:4424)

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)

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for ibm z systems 8 s390x
  • Red Hat enterprise linux for power, little endian 8 ppc64le
  • 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-2021:4424 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239823

    CVE-2021-23840 | CVE-2021-23841 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4424 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4424
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].