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

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&gt; 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