RHSA-2021:3723 - Security Advisory

Topic

Updated samba packages that fix several bugs with added enhancement are now available for Red Hat Gluster Storage 3.5 on Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Red Hat Gluster Storage is a software only scale-out storage solution that
provides flexible and affordable unstructured data storage. It unifies data
storage and infrastructure, increases performance, and improves availability and manageability to meet enterprise-level storage challenges.

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)
• samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token (CVE-2021-20254)

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.

Users of samba with Red Hat Gluster Storage are advised to upgrade to these updated packages.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Gluster Storage Server for On-premise 3 for RHEL 7 x86_64

Fixes

• BZ - 1879822 - CVE-2020-1472 samba: Netlogon elevation of privilege vulnerability (Zerologon)
• BZ - 1891685 - CVE-2020-14323 samba: Unprivileged user can crash winbind
• BZ - 1892631 - CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
• BZ - 1949442 - CVE-2021-20254 samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token

CVEs

• CVE-2020-1472
• CVE-2020-14318
• CVE-2020-14323
• CVE-2021-20254

References

• https://access.redhat.com/security/updates/classification/#moderate