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Red Hat: RHSA-2023-0639-01 Important: Samba NetLogon Fix

red hat
Calendar Grey February 8, 2023
Dist Redhat Esm H88
Keep your Red Hat Enterprise Linux systems fortified by applying the newest Samba patch that targets critical vulnerabilities.
An update for samba is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

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

After installing this update, the smb service will be restarted automatically.

Summary

Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.
Security Fix(es):
* samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided (CVE-2022-38023)
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.

Topics%20covered

Topics Covered

security advisory security fix Red Hat Enterprise Linux Samba important update encryption issue NetLogon

References

https://access.redhat.com/security/cve/CVE-2022-38023 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream E4S (v. 8.1):
aarch64: ctdb-debuginfo-4.10.4-107.el8_1.aarch64.rpm ctdb-tests-debuginfo-4.10.4-107.el8_1.aarch64.rpm libsmbclient-debuginfo-4.10.4-107.el8_1.aarch64.rpm libwbclient-debuginfo-4.10.4-107.el8_1.aarch64.rpm python3-samba-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-client-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-client-libs-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-common-libs-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-common-tools-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-debugsource-4.10.4-107.el8_1.aarch64.rpm samba-krb5-printing-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-libs-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-test-4.10.4-107.el8_1.aarch64.rpm samba-test-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-test-libs-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-winbind-clients-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-winbind-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-winbind-krb5-locator-debuginfo-4.10.4-107.el8_1.aarch64.rpm samba-winbind-modules-debuginfo-4.10.4-107.el8_1.aarch64.rpm
ppc64le: ctdb-debuginfo-4.10.4-107.el8_1.ppc64le.rpm ctdb-tests-debuginfo-4.10.4-107.el8_1.ppc64le.rpm libsmbclient-debuginfo-4.10.4-107.el8_1.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:0639-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0639
Issue date: 2023-02-07

Topic

An update for samba is now available for Red Hat Enterprise Linux 8.1Update Services for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security fix Red Hat Enterprise Linux Samba important update encryption issue NetLogon

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream E4S (v. 8.1) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS E4S (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2154362 - CVE-2022-38023 samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided

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