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Red Hat Enterprise Linux 8 RHSA-2022:0332-01 Critical Samba Security Fix

red hat
Calendar Grey January 31, 2022
Dist Redhat Esm H88
Important samba patch for Red Hat Enterprise Linux 8 resolving vulnerabilities and fixing bugs.
An update for samba 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

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: Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution (CVE-2021-44142)
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.
Bug Fix(es):
* Fix username map script regression introduced with CVE-2020-25717 (BZ#2046174)
* Fix possible segfault when joining the domain (BZ#2046160)

Topics%20covered

Topics Covered

security advisory Red Hat critical bug fix samba security fix out-of-bounds

References

https://access.redhat.com/security/cve/CVE-2021-44142 https://access.redhat.com/security/updates/classification/#critical

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: ctdb-debuginfo-4.14.5-9.el8_5.aarch64.rpm libsmbclient-debuginfo-4.14.5-9.el8_5.aarch64.rpm libwbclient-debuginfo-4.14.5-9.el8_5.aarch64.rpm python3-samba-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-client-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-client-libs-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-common-libs-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-common-tools-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-debugsource-4.14.5-9.el8_5.aarch64.rpm samba-krb5-printing-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-libs-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-test-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-test-libs-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-vfs-iouring-4.14.5-9.el8_5.aarch64.rpm samba-vfs-iouring-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-winbind-clients-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-winbind-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-winbind-krb5-locator-debuginfo-4.14.5-9.el8_5.aarch64.rpm samba-winbind-modules-debuginfo-4.14.5-9.el8_5.aarch64.rpm
ppc64le: ctdb-debuginfo-4.14.5-9.el8_5.ppc64le.rpm libsmbclient-debuginfo-4.14.5-9.el8_5.ppc64le.rpm libwbclient-debuginfo-4.14.5-9.el8_5.ppc64le.rpm python3-samba-debuginfo-4.14.5-9.el8_5.ppc64le.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:0332-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0332
Issue date: 2022-01-31

Topic

An update for samba is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Critical. 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 Red Hat critical bug fix samba security fix out-of-bounds

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64

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

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

Bugs Fixed

2046146 - CVE-2021-44142 samba: Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution

2046160 - [smb] Segmentation fault when joining the domain [rhel-8.5.0.z]

2046174 - Failed to authenticate users after upgrade samba package to release samba-4.14.5-7x [rhel-8.5.0.z]

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