RHSA-2021:4424: Moderate: openssl security and bug fix update
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 Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:4424?
The severity of RHSA-2021:4424 is considered 'important' due to the integer overflow vulnerability in OpenSSL.
How do I fix RHSA-2021:4424?
To fix RHSA-2021:4424, update OpenSSL to version 1.1.1k-4.el8 or later.
What are the affected packages in RHSA-2021:4424?
The affected packages in RHSA-2021:4424 include openssl, openssl-libs, openssl-debuginfo, and several related development and debug packages.
What is CVE-2021-23840 associated with RHSA-2021:4424?
CVE-2021-23840 is an integer overflow vulnerability in the CipherUpdate function of OpenSSL, which can lead to potential security risks.
Is RHSA-2021:4424 applicable to all versions of OpenSSL?
No, RHSA-2021:4424 specifically addresses vulnerabilities in the OpenSSL version 1.1.1k-4.el8 and earlier.