Synopsis
Moderate: samba security, bug fix, and enhancement update
Type/Severity
Security Advisory: Moderate
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 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.
The following packages have been upgraded to a later upstream version: samba (4.11.2). (BZ#1754409)
Security Fix(es):
- samba: Combination of parameters and permissions can allow user to escape from the share path definition (CVE-2019-10197)
- samba: smb client vulnerable to filenames containing path separators (CVE-2019-10218)
- samba: Crash after failed character conversion at log level 3 or above (CVE-2019-14907)
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 8.2 Release Notes linked from the References section.
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
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Red Hat Enterprise Linux for x86_64 8 x86_64
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Red Hat Enterprise Linux for IBM z Systems 8 s390x
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Red Hat Enterprise Linux for Power, little endian 8 ppc64le
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Red Hat Enterprise Linux for ARM 64 8 aarch64
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Red Hat CodeReady Linux Builder for x86_64 8 x86_64
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Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
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Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
-
Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x
Fixes
- BZ - 1710980 - [RFE] Add support for Kerberos KCM credential cache in pam_winbind/winbindd
- BZ - 1746225 - CVE-2019-10197 samba: Combination of parameters and permissions can allow user to escape from the share path definition
- BZ - 1754409 - Rebase Samba to 4.11.x
- BZ - 1754575 - samba: Remove NSS wins and winbind dependency on librt/libpthread as workaround for glibc defect.
- BZ - 1755440 - Trusted domain enumeration stopped working after Microsoft patch update
- BZ - 1763137 - CVE-2019-10218 samba: smb client vulnerable to filenames containing path separators
- BZ - 1776312 - Winbind is not restarted on package upgrade
- BZ - 1778770 - openchange needs to be rebuilt against samba-4.11.2-2.el8 and libldb-2.0.7-1.el8
- BZ - 1785134 - Libwbclient alternatives manual setting lost
- BZ - 1791207 - CVE-2019-14907 samba: Crash after failed character conversion at log level 3 or above
- BZ - 1794461 - Test samba3.smbtorture_s3.plain.WINDOWS-BAD-SYMLINK fails
CVEs
References
Vulmon