IBM Support

Security Bulletin: A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2017-2619)

Created by Laura Murphy on
Published URL:
https://www.ibm.com/support/pages/node/697249
697249

Security Bulletin


Summary

A Samba vulnerability affects IBM Spectrum Scale SMB protocol access method which could allow a remote authenticated attacker to launch a symlink attack, caused by a race condition. An attacker could exploit this vulnerability using SMB1 unix extensions or NFS to create a symbolic link from a temporary file to various files on the system, which could allow the attacker to view non-exported files.

Vulnerability Details

CVEID: CVE-2017-2619
DESCRIPTION: Samba could allow a remote authenticated attacker to launch a symlink attack, caused by a race condition A local attacker could exploit this vulnerability using SMB1 unix extensions to create a symbolic link from a temporary file to various files on the system, which could allow the attacker to view non-exported files.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123775 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

IBM Spectrum Scale V4.2.0.0 thru V4.2.3

IBM Spectrum Scale V4.1.1.0 thru V4.1.1.14

Remediation/Fixes

For IBM Spectrum Scale V4.2.0.0 thru V4.2.3, apply V4.2.3.1 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

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

12 June 2017: Original Version Published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
01 August 2018

UID

ssg1S1010155

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