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Red Hat 5 ELS: RHSA-2017:1272-01 Critical: Samba3x Remote Code Execution

Redhat Large Esm H500
An update for samba3x is now available for Red Hat Enterprise Linux 5 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,
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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: samba3x security update
Advisory ID:       RHSA-2017:1272-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:1272
Issue date:        2017-05-24
CVE Names:         CVE-2017-7494 
====================================================================
1. Summary:

An update for samba3x is now available for Red Hat Enterprise Linux 5
Extended Lifecycle Support.

Red Hat Product Security has rated this update as having a security impact
of Important. 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server (v. 5 ELS) - i386, s390x, x86_64

3. Description:

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.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

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

6. Package List:

Red Hat Enterprise Linux Server (v. 5 ELS):

Source:
samba3x-3.6.23-14.el5_11.src.rpm

i386:
samba3x-3.6.23-14.el5_11.i386.rpm
samba3x-client-3.6.23-14.el5_11.i386.rpm
samba3x-common-3.6.23-14.el5_11.i386.rpm
samba3x-debuginfo-3.6.23-14.el5_11.i386.rpm
samba3x-doc-3.6.23-14.el5_11.i386.rpm
samba3x-domainjoin-gui-3.6.23-14.el5_11.i386.rpm
samba3x-swat-3.6.23-14.el5_11.i386.rpm
samba3x-winbind-3.6.23-14.el5_11.i386.rpm
samba3x-winbind-devel-3.6.23-14.el5_11.i386.rpm

s390x:
samba3x-3.6.23-14.el5_11.s390x.rpm
samba3x-client-3.6.23-14.el5_11.s390x.rpm
samba3x-common-3.6.23-14.el5_11.s390x.rpm
samba3x-debuginfo-3.6.23-14.el5_11.s390.rpm
samba3x-debuginfo-3.6.23-14.el5_11.s390x.rpm
samba3x-doc-3.6.23-14.el5_11.s390x.rpm
samba3x-domainjoin-gui-3.6.23-14.el5_11.s390x.rpm
samba3x-swat-3.6.23-14.el5_11.s390x.rpm
samba3x-winbind-3.6.23-14.el5_11.s390.rpm
samba3x-winbind-3.6.23-14.el5_11.s390x.rpm
samba3x-winbind-devel-3.6.23-14.el5_11.s390.rpm
samba3x-winbind-devel-3.6.23-14.el5_11.s390x.rpm

x86_64:
samba3x-3.6.23-14.el5_11.x86_64.rpm
samba3x-client-3.6.23-14.el5_11.x86_64.rpm
samba3x-common-3.6.23-14.el5_11.x86_64.rpm
samba3x-debuginfo-3.6.23-14.el5_11.i386.rpm
samba3x-debuginfo-3.6.23-14.el5_11.x86_64.rpm
samba3x-doc-3.6.23-14.el5_11.x86_64.rpm
samba3x-domainjoin-gui-3.6.23-14.el5_11.x86_64.rpm
samba3x-swat-3.6.23-14.el5_11.x86_64.rpm
samba3x-winbind-3.6.23-14.el5_11.i386.rpm
samba3x-winbind-3.6.23-14.el5_11.x86_64.rpm
samba3x-winbind-devel-3.6.23-14.el5_11.i386.rpm
samba3x-winbind-devel-3.6.23-14.el5_11.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key

7. 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

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact

Copyright 2017 Red Hat, Inc.
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Red Hat 5 ELS: RHSA-2017:1272-01 Critical: Samba3x Remote Code Execution

red hat
Calendar Grey May 24, 2017
Dist Redhat Esm H88
Crucial samba3x patch released for Red Hat Enterprise Linux; urgent implementation recommended to reduce vulnerabilities.
An update for samba3x is now available for Red Hat Enterprise Linux 5 Extended Lifecycle Support

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.

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 Server (v. 5 ELS):
Source: samba3x-3.6.23-14.el5_11.src.rpm
i386: samba3x-3.6.23-14.el5_11.i386.rpm samba3x-client-3.6.23-14.el5_11.i386.rpm samba3x-common-3.6.23-14.el5_11.i386.rpm samba3x-debuginfo-3.6.23-14.el5_11.i386.rpm samba3x-doc-3.6.23-14.el5_11.i386.rpm samba3x-domainjoin-gui-3.6.23-14.el5_11.i386.rpm samba3x-swat-3.6.23-14.el5_11.i386.rpm samba3x-winbind-3.6.23-14.el5_11.i386.rpm samba3x-winbind-devel-3.6.23-14.el5_11.i386.rpm
s390x: samba3x-3.6.23-14.el5_11.s390x.rpm samba3x-client-3.6.23-14.el5_11.s390x.rpm samba3x-common-3.6.23-14.el5_11.s390x.rpm samba3x-debuginfo-3.6.23-14.el5_11.s390.rpm samba3x-debuginfo-3.6.23-14.el5_11.s390x.rpm samba3x-doc-3.6.23-14.el5_11.s390x.rpm samba3x-domainjoin-gui-3.6.23-14.el5_11.s390x.rpm samba3x-swat-3.6.23-14.el5_11.s390x.rpm samba3x-winbind-3.6.23-14.el5_11.s390.rpm samba3x-winbind-3.6.23-14.el5_11.s390x.rpm samba3x-winbind-devel-3.6.23-14.el5_11.s390.rpm samba3x-winbind-devel-3.6.23-14.el5_11.s390x.rpm
x86_64: samba3x-3.6.23-14.el5_11.x86_64.rpm samba3x-client-3.6.23-14.el5_11.x86_64.rpm samba3x-common-3.6.23-14.el5_11.x86_64.rpm samba3x-debuginfo-3.6.23-14.el5_11.i386.rpm samba3x-debuginfo-3.6.23-14.el5_11.x86_64.rpm samba3x-doc-3.6.23-14.el5_11.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:1272-01
Product: Red Hat Enterprise Linux
Issue date: 2017-05-24

Topic

An update for samba3x is now available for Red Hat Enterprise Linux 5Extended Lifecycle Support.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.

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 5 ELS) - i386, s390x, 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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