- Issued:
- 2021-06-08
- Updated:
- 2021-06-08
RHSA-2021:2313 - Moderate: samba security and bug fix update
Synopsis
Moderate: samba security and bug fix update
Type/Severity
Security Advisory Moderate
Topic
An update for samba is now available for 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
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: 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.
Bug Fix(es):
-
smb.service stops when samba rpms are updated (BZ#1930747)
-
samba printing dumps core (BZ#1937867)
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.
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for Scientific Computing | 7 | x86_64 |
| Red Hat Enterprise Linux for Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux for Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux for IBM z Systems | 7 | s390x |
| Red Hat Enterprise Linux Workstation | 7 | x86_64 |
| Red Hat Enterprise Linux Server | 7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) | 7 | s390x |
| Red Hat Enterprise Linux Resilient Storage for x86_64 | 7 | x86_64 |
| Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle Support | 7 | x86_64 |
| Red Hat Enterprise Linux Resilient Storage for Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux Resilient Storage for IBM z Systems | 7 | s390x |
| Red Hat Enterprise Linux Resilient Storage for IBM Power, little endian - Extended Life Cycle Support | 7 | ppc64le |
| Red Hat Enterprise Linux Desktop | 7 | x86_64 |
Updated Packages
- ctdb-tests-4.10.16-15.el7_9.x86_64.rpm
- samba-common-libs-4.10.16-15.el7_9.i686.rpm
- samba-python-4.10.16-15.el7_9.x86_64.rpm
- libsmbclient-devel-4.10.16-15.el7_9.ppc.rpm
- samba-devel-4.10.16-15.el7_9.ppc64.rpm
- samba-test-4.10.16-15.el7_9.ppc64.rpm
- samba-client-libs-4.10.16-15.el7_9.s390x.rpm
- libwbclient-4.10.16-15.el7_9.s390.rpm
- samba-dc-4.10.16-15.el7_9.ppc64le.rpm
- samba-python-test-4.10.16-15.el7_9.s390x.rpm
- samba-test-libs-4.10.16-15.el7_9.s390x.rpm
- libsmbclient-4.10.16-15.el7_9.ppc64.rpm
- libwbclient-4.10.16-15.el7_9.ppc64le.rpm
- samba-common-libs-4.10.16-15.el7_9.ppc64le.rpm
- samba-common-tools-4.10.16-15.el7_9.s390x.rpm
- samba-devel-4.10.16-15.el7_9.ppc64le.rpm
- samba-winbind-clients-4.10.16-15.el7_9.x86_64.rpm
- samba-common-libs-4.10.16-15.el7_9.ppc.rpm
- libsmbclient-4.10.16-15.el7_9.i686.rpm
- samba-dc-libs-4.10.16-15.el7_9.x86_64.rpm
- libwbclient-devel-4.10.16-15.el7_9.i686.rpm
- samba-winbind-modules-4.10.16-15.el7_9.ppc64le.rpm
- samba-krb5-printing-4.10.16-15.el7_9.x86_64.rpm
- ctdb-4.10.16-15.el7_9.ppc64le.rpm
- libsmbclient-4.10.16-15.el7_9.s390.rpm
- ctdb-tests-4.10.16-15.el7_9.ppc64le.rpm
- samba-client-4.10.16-15.el7_9.s390x.rpm
- samba-winbind-krb5-locator-4.10.16-15.el7_9.ppc64.rpm
- samba-test-libs-4.10.16-15.el7_9.ppc.rpm
- samba-winbind-modules-4.10.16-15.el7_9.s390x.rpm
- libwbclient-4.10.16-15.el7_9.s390x.rpm
- samba-debuginfo-4.10.16-15.el7_9.ppc64.rpm
- libsmbclient-4.10.16-15.el7_9.s390x.rpm
- samba-4.10.16-15.el7_9.x86_64.rpm
- samba-client-4.10.16-15.el7_9.ppc64le.rpm
- samba-dc-4.10.16-15.el7_9.x86_64.rpm
- samba-client-libs-4.10.16-15.el7_9.x86_64.rpm
- samba-test-4.10.16-15.el7_9.ppc64le.rpm
- samba-test-libs-4.10.16-15.el7_9.i686.rpm
- samba-client-4.10.16-15.el7_9.ppc64.rpm
- samba-4.10.16-15.el7_9.ppc64.rpm
- samba-client-libs-4.10.16-15.el7_9.i686.rpm
- samba-debuginfo-4.10.16-15.el7_9.ppc64le.rpm
- samba-python-4.10.16-15.el7_9.ppc.rpm
- samba-winbind-4.10.16-15.el7_9.ppc64le.rpm
- libsmbclient-devel-4.10.16-15.el7_9.s390.rpm
- libsmbclient-devel-4.10.16-15.el7_9.i686.rpm
- samba-libs-4.10.16-15.el7_9.i686.rpm
- samba-test-libs-4.10.16-15.el7_9.s390.rpm
- samba-client-libs-4.10.16-15.el7_9.s390.rpm
- libsmbclient-devel-4.10.16-15.el7_9.s390x.rpm
- samba-common-tools-4.10.16-15.el7_9.x86_64.rpm
- libsmbclient-4.10.16-15.el7_9.x86_64.rpm
- libwbclient-4.10.16-15.el7_9.i686.rpm
- samba-dc-libs-4.10.16-15.el7_9.ppc64le.rpm
- samba-winbind-krb5-locator-4.10.16-15.el7_9.s390x.rpm
- samba-libs-4.10.16-15.el7_9.ppc64.rpm
- samba-client-libs-4.10.16-15.el7_9.ppc64le.rpm
- samba-dc-4.10.16-15.el7_9.s390x.rpm
- samba-devel-4.10.16-15.el7_9.ppc.rpm
- samba-python-test-4.10.16-15.el7_9.ppc64le.rpm
- samba-libs-4.10.16-15.el7_9.x86_64.rpm
- samba-winbind-4.10.16-15.el7_9.ppc64.rpm
- ctdb-4.10.16-15.el7_9.s390x.rpm
- samba-common-tools-4.10.16-15.el7_9.ppc64le.rpm
- samba-krb5-printing-4.10.16-15.el7_9.ppc64le.rpm
- samba-client-libs-4.10.16-15.el7_9.ppc64.rpm
- samba-libs-4.10.16-15.el7_9.s390x.rpm
- samba-devel-4.10.16-15.el7_9.x86_64.rpm
- samba-python-test-4.10.16-15.el7_9.ppc64.rpm
- samba-winbind-clients-4.10.16-15.el7_9.ppc64le.rpm
- samba-krb5-printing-4.10.16-15.el7_9.ppc64.rpm
- samba-winbind-4.10.16-15.el7_9.s390x.rpm
- ctdb-tests-4.10.16-15.el7_9.s390x.rpm
- samba-libs-4.10.16-15.el7_9.ppc64le.rpm
- samba-4.10.16-15.el7_9.s390x.rpm
- samba-4.10.16-15.el7_9.ppc64le.rpm
- samba-client-libs-4.10.16-15.el7_9.ppc.rpm
- samba-pidl-4.10.16-15.el7_9.noarch.rpm
- samba-python-4.10.16-15.el7_9.i686.rpm
- libsmbclient-devel-4.10.16-15.el7_9.ppc64.rpm
- samba-python-4.10.16-15.el7_9.ppc64.rpm
- libwbclient-4.10.16-15.el7_9.ppc64.rpm
- samba-python-4.10.16-15.el7_9.s390x.rpm
- libwbclient-devel-4.10.16-15.el7_9.ppc64.rpm
- samba-common-libs-4.10.16-15.el7_9.x86_64.rpm
- samba-python-4.10.16-15.el7_9.ppc64le.rpm
- samba-debuginfo-4.10.16-15.el7_9.x86_64.rpm
- samba-debuginfo-4.10.16-15.el7_9.i686.rpm
- libwbclient-devel-4.10.16-15.el7_9.s390.rpm
- libwbclient-devel-4.10.16-15.el7_9.ppc.rpm
- samba-devel-4.10.16-15.el7_9.s390x.rpm
- samba-dc-libs-4.10.16-15.el7_9.ppc64.rpm
- samba-krb5-printing-4.10.16-15.el7_9.s390x.rpm
- samba-common-libs-4.10.16-15.el7_9.s390.rpm
- samba-devel-4.10.16-15.el7_9.s390.rpm
- samba-winbind-modules-4.10.16-15.el7_9.ppc64.rpm
- samba-debuginfo-4.10.16-15.el7_9.ppc.rpm
- samba-winbind-krb5-locator-4.10.16-15.el7_9.x86_64.rpm
- samba-devel-4.10.16-15.el7_9.i686.rpm
- samba-winbind-modules-4.10.16-15.el7_9.i686.rpm
- libsmbclient-4.10.16-15.el7_9.ppc.rpm
- libwbclient-4.10.16-15.el7_9.x86_64.rpm
- samba-test-libs-4.10.16-15.el7_9.x86_64.rpm
- samba-dc-libs-4.10.16-15.el7_9.s390x.rpm
- ctdb-4.10.16-15.el7_9.x86_64.rpm
- samba-common-libs-4.10.16-15.el7_9.ppc64.rpm
- samba-winbind-modules-4.10.16-15.el7_9.s390.rpm
- samba-dc-4.10.16-15.el7_9.ppc64.rpm
- samba-winbind-modules-4.10.16-15.el7_9.x86_64.rpm
- samba-winbind-krb5-locator-4.10.16-15.el7_9.ppc64le.rpm
- samba-libs-4.10.16-15.el7_9.ppc.rpm
- samba-common-4.10.16-15.el7_9.noarch.rpm
- samba-common-libs-4.10.16-15.el7_9.s390x.rpm
- libsmbclient-devel-4.10.16-15.el7_9.ppc64le.rpm
- samba-test-4.10.16-15.el7_9.x86_64.rpm
- samba-debuginfo-4.10.16-15.el7_9.s390.rpm
- samba-test-libs-4.10.16-15.el7_9.ppc64.rpm
- libwbclient-devel-4.10.16-15.el7_9.x86_64.rpm
- libwbclient-4.10.16-15.el7_9.ppc.rpm
- samba-python-4.10.16-15.el7_9.s390.rpm
- samba-winbind-4.10.16-15.el7_9.x86_64.rpm
- samba-client-4.10.16-15.el7_9.x86_64.rpm
- libwbclient-devel-4.10.16-15.el7_9.s390x.rpm
- samba-vfs-glusterfs-4.10.16-15.el7_9.x86_64.rpm
- samba-winbind-clients-4.10.16-15.el7_9.s390x.rpm
- samba-libs-4.10.16-15.el7_9.s390.rpm
- samba-winbind-modules-4.10.16-15.el7_9.ppc.rpm
- samba-4.10.16-15.el7_9.src.rpm
- samba-debuginfo-4.10.16-15.el7_9.s390x.rpm
- libsmbclient-devel-4.10.16-15.el7_9.x86_64.rpm
- samba-python-test-4.10.16-15.el7_9.x86_64.rpm
- libwbclient-devel-4.10.16-15.el7_9.ppc64le.rpm
- samba-test-4.10.16-15.el7_9.s390x.rpm
- libsmbclient-4.10.16-15.el7_9.ppc64le.rpm
- samba-test-libs-4.10.16-15.el7_9.ppc64le.rpm
- samba-common-tools-4.10.16-15.el7_9.ppc64.rpm
- samba-winbind-clients-4.10.16-15.el7_9.ppc64.rpm
Fixes
- This content is not included.BZ - 1930747
- This content is not included.BZ - 1937867
- This content is not included.BZ - 1949442
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.