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Alerts This Week
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Red Hat Enterprise Linux 6: RHSA-2017:1271 Critical: Samba4 RCE Issue

red hat
Calendar Grey May 24, 2017
Scroller Redhat
Crucial samba4 security patch released for Red Hat Enterprise Linux 6, tackling remote code execution vulnerability that allows root access.
An update for samba4 is now available for Red Hat Enterprise Linux 6

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) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other 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 critical issue remote code execution Red Hat Enterprise Linux samba4 update

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: samba4-4.2.10-10.el6_9.src.rpm
i386: samba4-4.2.10-10.el6_9.i686.rpm samba4-client-4.2.10-10.el6_9.i686.rpm samba4-common-4.2.10-10.el6_9.i686.rpm samba4-dc-4.2.10-10.el6_9.i686.rpm samba4-dc-libs-4.2.10-10.el6_9.i686.rpm samba4-debuginfo-4.2.10-10.el6_9.i686.rpm samba4-devel-4.2.10-10.el6_9.i686.rpm samba4-libs-4.2.10-10.el6_9.i686.rpm samba4-pidl-4.2.10-10.el6_9.i686.rpm samba4-python-4.2.10-10.el6_9.i686.rpm samba4-test-4.2.10-10.el6_9.i686.rpm samba4-winbind-4.2.10-10.el6_9.i686.rpm samba4-winbind-clients-4.2.10-10.el6_9.i686.rpm samba4-winbind-krb5-locator-4.2.10-10.el6_9.i686.rpm
x86_64: samba4-4.2.10-10.el6_9.x86_64.rpm samba4-client-4.2.10-10.el6_9.x86_64.rpm samba4-common-4.2.10-10.el6_9.x86_64.rpm samba4-dc-4.2.10-10.el6_9.x86_64.rpm samba4-dc-libs-4.2.10-10.el6_9.x86_64.rpm samba4-debuginfo-4.2.10-10.el6_9.x86_64.rpm samba4-devel-4.2.10-10.el6_9.x86_64.rpm samba4-libs-4.2.10-10.el6_9.x86_64.rpm samba4-pidl-4.2.10-10.el6_9.x86_64.rpm samba4-python-4.2.10-10.el6_9.x86_64.rpm samba4-test-4.2.10-10.el6_9.x86_64.rpm samba4-winbind-4.2.10-10.el6_9.x86_64.rpm samba4-winbind-clients-4.2.10-10.el6_9.x86_64.rpm samba4-winbind-krb5-locator-4.2.10-10.el6_9.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:1271-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1271
Issue date: 2017-05-24

Topic

An update for samba4 is now available for Red Hat Enterprise Linux 6.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 critical issue remote code execution Red Hat Enterprise Linux samba4 update

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

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

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