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Red Hat RHSA-2016-0448-01 Moderate: Samba Access Control Issue

red hat
Calendar Grey March 15, 2016
Scroller Redhat
Oracle releases updates for their MySQL database on versions 5.6 and 5.7, tackling a significant vulnerability related to user authentication management.
Updated samba packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7

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

Summary

Samba is an open-source implementation of the Server Message Block (SMB) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other information.
A flaw was found in the way Samba handled ACLs on symbolic links. An authenticated user could use this flaw to gain access to an arbitrary file or directory by overwriting its ACL. (CVE-2015-7560)
Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges Jeremy Allison (Google) and the Samba team as the original reporters.
All samba users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, the smb service will be restarted automatically.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat access control access issue Samba

References

https://access.redhat.com/security/cve/CVE-2015-7560 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: samba-3.6.23-25.el6_7.src.rpm
i386: libsmbclient-3.6.23-25.el6_7.i686.rpm samba-client-3.6.23-25.el6_7.i686.rpm samba-common-3.6.23-25.el6_7.i686.rpm samba-debuginfo-3.6.23-25.el6_7.i686.rpm samba-winbind-3.6.23-25.el6_7.i686.rpm samba-winbind-clients-3.6.23-25.el6_7.i686.rpm
x86_64: libsmbclient-3.6.23-25.el6_7.i686.rpm libsmbclient-3.6.23-25.el6_7.x86_64.rpm samba-client-3.6.23-25.el6_7.x86_64.rpm samba-common-3.6.23-25.el6_7.i686.rpm samba-common-3.6.23-25.el6_7.x86_64.rpm samba-debuginfo-3.6.23-25.el6_7.i686.rpm samba-debuginfo-3.6.23-25.el6_7.x86_64.rpm samba-winbind-3.6.23-25.el6_7.x86_64.rpm samba-winbind-clients-3.6.23-25.el6_7.i686.rpm samba-winbind-clients-3.6.23-25.el6_7.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: libsmbclient-devel-3.6.23-25.el6_7.i686.rpm samba-3.6.23-25.el6_7.i686.rpm samba-debuginfo-3.6.23-25.el6_7.i686.rpm samba-doc-3.6.23-25.el6_7.i686.rpm samba-domainjoin-gui-3.6.23-25.el6_7.i686.rpm samba-swat-3.6.23-25.el6_7.i686.rpm samba-winbind-devel-3.6.23-25.el6_7.i686.rpm samba-winbind-krb5-locator-3.6.23-25.el6_7.i686.rpm
x86_64: libsmbclient-devel-3.6.23-25.el6_7.i686.rpm libsmbclient-devel-3.6.23-25.el6_7.x86_64.rpm samba-3.6.23-25.el6_7.x86_64.rpm

Read the Full Advisory


Severity
medium
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:0448-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0448.html
Issue date: 2016-03-15

Topic

Updated samba packages that fix one security issue are now availablefor Red Hat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Moderate securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat access control access issue Samba

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Resilient Storage (v. 7) - x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

1309992 - CVE-2015-7560 samba: Incorrect ACL get/set allowed on symlink path

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