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Red Hat: RHSA-2016-0449-01 Moderate: Samba4 ACL Issue and Update
red hat
March 15, 2016
Updated samba4 packages that fix one security issue are now available for Red Hat Enterprise Linux 6
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 samba4 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 Covered
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:
samba4-4.0.0-68.el6_7.rc4.src.rpm
i386:
samba4-4.0.0-68.el6_7.rc4.i686.rpm
samba4-client-4.0.0-68.el6_7.rc4.i686.rpm
samba4-common-4.0.0-68.el6_7.rc4.i686.rpm
samba4-dc-4.0.0-68.el6_7.rc4.i686.rpm
samba4-dc-libs-4.0.0-68.el6_7.rc4.i686.rpm
samba4-debuginfo-4.0.0-68.el6_7.rc4.i686.rpm
samba4-devel-4.0.0-68.el6_7.rc4.i686.rpm
samba4-libs-4.0.0-68.el6_7.rc4.i686.rpm
samba4-pidl-4.0.0-68.el6_7.rc4.i686.rpm
samba4-python-4.0.0-68.el6_7.rc4.i686.rpm
samba4-swat-4.0.0-68.el6_7.rc4.i686.rpm
samba4-test-4.0.0-68.el6_7.rc4.i686.rpm
samba4-winbind-4.0.0-68.el6_7.rc4.i686.rpm
samba4-winbind-clients-4.0.0-68.el6_7.rc4.i686.rpm
samba4-winbind-krb5-locator-4.0.0-68.el6_7.rc4.i686.rpm
x86_64:
samba4-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-client-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-common-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-dc-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-dc-libs-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-debuginfo-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-devel-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-libs-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-pidl-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-python-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-swat-4.0.0-68.el6_7.rc4.x86_64.rpm
samba4-test-4.0.0-68.el6_7.rc4.x86_64.rpm
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Advisory ID: RHSA-2016:0449-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0449.html
Issue date: 2016-03-15
Topic
Updated samba4 packages that fix one security issue are now availablefor Red Hat Enterprise Linux 6.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 Covered
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Bugs Fixed
1309992 - CVE-2015-7560 samba: Incorrect ACL get/set allowed on symlink path
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