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ALSA-2021:1647 Not scored

Moderate: samba security, bug fix, and enhancement update

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 AlmaLinux Release Notes linked from the References section.

Exploit probability Not scored
Published May 18, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 libsmbclient-devel
AlmaLinux:8 libwbclient-devel
AlmaLinux:8 openchange
AlmaLinux:8 samba-devel

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:1647

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 AlmaLinux Release Notes linked from the References section.

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05 / REFERENCES

Further evidence