Security Bulletin: A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2017-7494)

Summary

A Samba vulnerability affects IBM Spectrum Scale SMB protocol access method which could allow a remote authenticated attacker to execute arbitrary code on the system, caused by improper access to named pipe endpoints. By uploading a specially-crafted shared library to a writeable share, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Vulnerability Details

CVEID: CVE-2017-7494 DESCRIPTION: Samba could allow a remote authenticated attacker to execute arbitrary code on the system, caused by improper access to named pipe endpoints. By uploading a specially-crafted shared library to a writeable share, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/126417 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Spectrum Scale 4.2.3.0 - 4.2.3.1

IBM Spectrum Scale 4.2.2.0 - 4.2.2.3

IBM Spectrum Scale 4.2.1.0 - 4.2.1.2

IBM Spectrum Scale 4.2.0.0 - 4.2.0.4

IBM Spectrum Scale 4.1.1.0 - 4.1.1.14

Remediation/Fixes

For IBM Spectrum Scale V4.2.0.0 thru V4.2.3.1, apply V4.2.3.2 available from FixCentral at
https://www-945.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=4.2.3&platform=All&function=all

For IBM Spectrum Scale V4.1.1.0 thru V4.1.1.14, apply V4.1.1.15 available from FixCentral at
https://www-945.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%2Bdefined%2Bstorage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=4.1.1&platform=All&function=all

If you cannot apply the latest level of service, contact IBM Service for an efix:

• For IBM Spectrrum Scale 4.2.3.0-4.2.3.1, reference APAR IV97172
• For IBM Spectrum Scale 4.2.2.0 - 4.2.2.3, reference APAR IV97141
• For IBM Spectrum Scale 4.2.1.0 - 4.2.1.2, reference APAR IV97142
• For IBM Spectrum Scale 4.2.0.0 - 4.2.0.4, reference APAR IV97143
• For IBM Spectrum Scale V4.1.1.15, reference APAR IV97174

To contact IBM Service, see http://www.ibm.com/planetwide/

Workarounds and Mitigations

None