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Red Hat Enterprise Linux 8: RHSA-2021-4424 Moderate: OpenSSL Bug Fix Update

red hat
Calendar Grey November 9, 2021
Dist Redhat Esm H88
A recent security patch for OpenSSL on Red Hat Enterprise Linux 8 tackles significant vulnerabilities aimed at improving overall system defense.
An update for openssl is now available for Red Hat Enterprise Linux 8

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.

Summary

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.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux moderate impact OpenSSL integer overflow pointer dereference

References

https://access.redhat.com/security/cve/CVE-2021-23840 https://access.redhat.com/security/cve/CVE-2021-23841 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.5_release_notes/index

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: openssl-1.1.1k-4.el8.src.rpm
aarch64: openssl-1.1.1k-4.el8.aarch64.rpm openssl-debuginfo-1.1.1k-4.el8.aarch64.rpm openssl-debugsource-1.1.1k-4.el8.aarch64.rpm openssl-devel-1.1.1k-4.el8.aarch64.rpm openssl-libs-1.1.1k-4.el8.aarch64.rpm openssl-libs-debuginfo-1.1.1k-4.el8.aarch64.rpm openssl-perl-1.1.1k-4.el8.aarch64.rpm
ppc64le: openssl-1.1.1k-4.el8.ppc64le.rpm openssl-debuginfo-1.1.1k-4.el8.ppc64le.rpm openssl-debugsource-1.1.1k-4.el8.ppc64le.rpm openssl-devel-1.1.1k-4.el8.ppc64le.rpm openssl-libs-1.1.1k-4.el8.ppc64le.rpm openssl-libs-debuginfo-1.1.1k-4.el8.ppc64le.rpm openssl-perl-1.1.1k-4.el8.ppc64le.rpm
s390x: openssl-1.1.1k-4.el8.s390x.rpm openssl-debuginfo-1.1.1k-4.el8.s390x.rpm openssl-debugsource-1.1.1k-4.el8.s390x.rpm openssl-devel-1.1.1k-4.el8.s390x.rpm openssl-libs-1.1.1k-4.el8.s390x.rpm openssl-libs-debuginfo-1.1.1k-4.el8.s390x.rpm openssl-perl-1.1.1k-4.el8.s390x.rpm
x86_64: openssl-1.1.1k-4.el8.x86_64.rpm openssl-debuginfo-1.1.1k-4.el8.i686.rpm openssl-debuginfo-1.1.1k-4.el8.x86_64.rpm openssl-debugsource-1.1.1k-4.el8.i686.rpm openssl-debugsource-1.1.1k-4.el8.x86_64.rpm openssl-devel-1.1.1k-4.el8.i686.rpm openssl-devel-1.1.1k-4.el8.x86_64.rpm openssl-libs-1.1.1k-4.el8.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:4424-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4424
Issue date: 2021-11-09

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux moderate impact OpenSSL integer overflow pointer dereference

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1908036 - openssl listens on IPv4 "any" socket only not on IPv6

1930310 - CVE-2021-23841 openssl: NULL pointer dereference in X509_issuer_and_serial_hash()

1930324 - CVE-2021-23840 openssl: integer overflow in CipherUpdate

1934534 - Rebase OpenSSL to 1.1.1k

1934600 - DTLS1.0 connections are allowed in DEFAULT crypto-policy [rhel-8]

1939637 - Openssl -dtls option breaks in FIPS mode[rhel8]

1940085 - FIPS_selftest() fails in FIPS mode.

1965362 - In renegotiated handshake openssl sends extensions which client didn't advertise in second ClientHello [rhel-8]

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