QID 239678

Date Published: 2021-10-20

QID 239678: Red Hat Update for Open Secure Sockets Layer (OpenSSL) (RHSA-2021:3798)

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 Server 7 x86_64
Red Hat Enterprise Linux Workstation 7 x86_64
Red Hat Enterprise Linux Desktop 7 x86_64
Red Hat Enterprise Linux for IBM z Systems 7 s390x
Red Hat Enterprise Linux for Power, big endian 7 ppc64
Red Hat Enterprise Linux for Scientific Computing 7 x86_64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le

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 Applying Package Updates to RHEL system for details.

    Refer to Red Hat security advisory RHSA-2021:3798 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239678

    CVE-2021-23840 | CVE-2021-23841 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:3798 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:3798?language=en
    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].