Synopsis

Important: openssl security update

Type/Severity

Security Advisory: Important

Topic

An update for openssl is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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: NULL pointer dereference in signature_algorithms processing (CVE-2021-3449)
• openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT (CVE-2021-3450)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

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

Fixes

• BZ - 1941547 - CVE-2021-3450 openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT
• BZ - 1941554 - CVE-2021-3449 openssl: NULL pointer dereference in signature_algorithms processing

CVEs

• CVE-2021-3449
• CVE-2021-3450

References