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Alerts This Week
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Red Hat: RHSA-2017-1270-01 Important: Samba Remote Code Execution Risk

red hat
Calendar Grey May 24, 2017
Scroller Redhat
Debian announces a significant OpenSSL patch tackling severe vulnerabilities, notably potential data leakage issues.
An update for samba is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7

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.

Summary

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):
* A remote code execution flaw was found in Samba. A malicious authenticated samba client, having write access to the samba share, could use this flaw to execute arbitrary code as root. (CVE-2017-7494)
Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges steelo as the original reporter.

Topics%20covered

Topics Covered

security advisory security update red hat remote code execution samba important rce risk

References

https://access.redhat.com/security/cve/CVE-2017-7494 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/27e992a5-7725-4ae8-8d91-dc3fc937552a

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: samba-3.6.23-43.el6_9.src.rpm
i386: libsmbclient-3.6.23-43.el6_9.i686.rpm samba-client-3.6.23-43.el6_9.i686.rpm samba-common-3.6.23-43.el6_9.i686.rpm samba-debuginfo-3.6.23-43.el6_9.i686.rpm samba-winbind-3.6.23-43.el6_9.i686.rpm samba-winbind-clients-3.6.23-43.el6_9.i686.rpm
x86_64: libsmbclient-3.6.23-43.el6_9.i686.rpm libsmbclient-3.6.23-43.el6_9.x86_64.rpm samba-client-3.6.23-43.el6_9.x86_64.rpm samba-common-3.6.23-43.el6_9.i686.rpm samba-common-3.6.23-43.el6_9.x86_64.rpm samba-debuginfo-3.6.23-43.el6_9.i686.rpm samba-debuginfo-3.6.23-43.el6_9.x86_64.rpm samba-winbind-3.6.23-43.el6_9.x86_64.rpm samba-winbind-clients-3.6.23-43.el6_9.i686.rpm samba-winbind-clients-3.6.23-43.el6_9.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: libsmbclient-devel-3.6.23-43.el6_9.i686.rpm samba-3.6.23-43.el6_9.i686.rpm samba-debuginfo-3.6.23-43.el6_9.i686.rpm samba-doc-3.6.23-43.el6_9.i686.rpm samba-domainjoin-gui-3.6.23-43.el6_9.i686.rpm samba-swat-3.6.23-43.el6_9.i686.rpm samba-winbind-devel-3.6.23-43.el6_9.i686.rpm samba-winbind-krb5-locator-3.6.23-43.el6_9.i686.rpm
x86_64: libsmbclient-devel-3.6.23-43.el6_9.i686.rpm libsmbclient-devel-3.6.23-43.el6_9.x86_64.rpm samba-3.6.23-43.el6_9.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:1270-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1270
Issue date: 2017-05-24

Topic

An update for samba is now available for Red Hat Enterprise Linux 6 and RedHat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update red hat remote code execution samba important rce risk

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) - aarch64, 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) - aarch64, 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

1450347 - CVE-2017-7494 samba: Loading shared modules from any path in the system leading to RCE

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