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redhatRedHatRHSA-2021:1647
HistoryMay 18, 2021 - 5:44 a.m.

(RHSA-2021:1647) Moderate: samba security, bug fix, and enhancement update

2021-05-1805:44:25
access.redhat.com
161

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.451 Medium

EPSS

Percentile

97.4%

JSON

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.

The following packages have been upgraded to a later upstream version: samba (4.13.3). (BZ#1878109)

Security Fix(es):

  • samba: Netlogon elevation of privilege vulnerability (Zerologon) (CVE-2020-1472)

  • samba: Missing handle permissions check in SMB1/2/3 ChangeNotify (CVE-2020-14318)

  • samba: Unprivileged user can crash winbind (CVE-2020-14323)

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 8.4 Release Notes linked from the References section.

OSVersionArchitecturePackageVersionFilename
RedHat8aarch64ctdb< 4.13.3-3.el8ctdb-4.13.3-3.el8.aarch64.rpm
RedHat8x86_64python3-samba-test< 4.13.3-3.el8python3-samba-test-4.13.3-3.el8.x86_64.rpm
RedHat8x86_64samba-client-libs-debuginfo< 4.13.3-3.el8samba-client-libs-debuginfo-4.13.3-3.el8.x86_64.rpm
RedHat8s390xsamba-krb5-printing-debuginfo< 4.13.3-3.el8samba-krb5-printing-debuginfo-4.13.3-3.el8.s390x.rpm
RedHat8s390xsamba-devel< 4.13.3-3.el8samba-devel-4.13.3-3.el8.s390x.rpm
RedHat8ppc64lectdb-tests< 4.13.3-3.el8ctdb-tests-4.13.3-3.el8.ppc64le.rpm
RedHat8i686samba-common-libs-debuginfo< 4.13.3-3.el8samba-common-libs-debuginfo-4.13.3-3.el8.i686.rpm
RedHat8s390xctdb< 4.13.3-3.el8ctdb-4.13.3-3.el8.s390x.rpm
RedHat8i686libsmbclient-debuginfo< 4.13.3-3.el8libsmbclient-debuginfo-4.13.3-3.el8.i686.rpm
RedHat8s390xsamba-winbind-clients< 4.13.3-3.el8samba-winbind-clients-4.13.3-3.el8.s390x.rpm
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5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.451 Medium

EPSS

Percentile

97.4%

JSON
Related for RHSA-2021:1647
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