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Red Hat: RHSA-2021-4843-01 Important: Samba Security Update

red hat
Calendar Grey November 29, 2021
Dist Redhat Esm H88
Canonical releases significant OpenSSL security patch for Ubuntu 20.04, targeting vulnerabilities in cryptographic functions.
An update for samba is now available for Red Hat Gluster Storage 3.5 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

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

For details on migrating Samba/CTDB configuration files, refer to:

https://access.redhat.com/solutions/4311261

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: SMB1 client connections can be downgraded to plaintext authentication (CVE-2016-2124)
* samba: Subsequent DCE/RPC fragment injection vulnerability (CVE-2021-23192)
* samba: A user in an AD Domain could become root on domain members(CVE-2020-25717)
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.
All users of Samba with Red Hat Gluster Storage are advised to upgrade to these updated packages.

Topics%20covered

Topics Covered

security advisory Red Hat samba security fix important update SMB Gluster Storage

References

https://access.redhat.com/security/cve/CVE-2016-2124 https://access.redhat.com/security/cve/CVE-2020-25717 https://access.redhat.com/security/cve/CVE-2021-23192 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Gluster 3.5 Samba on RHEL-8:
Source: samba-4.14.5-204.el8rhgs.src.rpm
noarch: samba-common-4.14.5-204.el8rhgs.noarch.rpm samba-pidl-4.14.5-204.el8rhgs.noarch.rpm
x86_64: ctdb-4.14.5-204.el8rhgs.x86_64.rpm ctdb-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm libsmbclient-4.14.5-204.el8rhgs.x86_64.rpm libsmbclient-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm libsmbclient-devel-4.14.5-204.el8rhgs.x86_64.rpm libwbclient-4.14.5-204.el8rhgs.x86_64.rpm libwbclient-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm libwbclient-devel-4.14.5-204.el8rhgs.x86_64.rpm python3-samba-4.14.5-204.el8rhgs.x86_64.rpm python3-samba-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm samba-4.14.5-204.el8rhgs.x86_64.rpm samba-client-4.14.5-204.el8rhgs.x86_64.rpm samba-client-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm samba-client-libs-4.14.5-204.el8rhgs.x86_64.rpm samba-client-libs-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm samba-common-libs-4.14.5-204.el8rhgs.x86_64.rpm samba-common-libs-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm samba-common-tools-4.14.5-204.el8rhgs.x86_64.rpm samba-common-tools-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm samba-debuginfo-4.14.5-204.el8rhgs.x86_64.rpm samba-debugsource-4.14.5-204.el8rhgs.x86_64.rpm samba-devel-4.14.5-204.el8rhgs.x86_64.rpm samba-krb5-printing-4.14.5-204.el8rhgs.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4843-01
Product: Red Hat Gluster Storage
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4843
Issue date: 2021-11-29

Topic

An update for samba is now available for Red Hat Gluster Storage 3.5 forRed Hat Enterprise Linux 8.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 Red Hat samba security fix important update SMB Gluster Storage

Relevant Releases Architectures

Red Hat Gluster 3.5 Samba on RHEL-8 - noarch, x86_64

Bugs Fixed

2019660 - CVE-2016-2124 samba: SMB1 client connections can be downgraded to plaintext authentication

2019666 - CVE-2021-23192 samba: Subsequent DCE/RPC fragment injection vulnerability

2019672 - CVE-2020-25717 samba: A user in an AD Domain could become root on domain members

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