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Security Bulletin: A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2018-10858)

Security Bulletin


Summary

A Samba vulnerability affects IBM Spectrum Scale SMB protocol access method to a heap-based buffer overflow, caused by improper bounds checking by libsmbclient. By sending an overly long filename, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

Vulnerability Details

CVEID: CVE-2018-10858
DESCRIPTION: Samba is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by libsmbclient. By sending an overly long filename, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148710 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

IBM Spectrum Scale V5.0.0.0 thru V5.0.2.0

IBM Spectrum Scale V4.2.0.0 thru V4.2.3.10

IBM Spectrum Scale V4.1.1.0 thru V4.1.1.20

 

Remediation/Fixes

For IBM Spectrum Scale V5.0.0.0 thru V5.0.2.0, apply V5.0.2.1 available from FixCentral at
https://www-945.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=5.0.2&platform=All&function=all

For IBM Spectrum Scale V4.2.0.0 thru V4.2.3.10, apply V4.2.3.11 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 V4.1.0.0 (GPFS) thru V4.1.1.20, apply V4.1.1.21 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

  • IBM Specrum Scale V5.0.0.0 thru V5.0.2.0, reference APAR IJ09591
  • IBM Spectrum Scale 4.2.0.0 thru 4.2.3.10, reference APAR  IJ09590
  • IBM Spectrum Scale 4.1.0.0 thru 4.1.1.20, reference APAR IJ09563



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

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

30 Oct 2018 : 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.

Internal Use Only

PR - 120613, Advisory id - 13124

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Document Information

Modified date:
30 October 2018

UID

ibm10732876

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