Security Bulletin: Multiple vulnerabilities in samba affect IBM Spectrum Scale SMB protocol access method.

Summary

Multiple samba vulnerabilities affect IBM Spectrum Scale SMB protocol access method that could cause denial of service. A fix for these vulnerabilities is available.

Vulnerability Details

CVEID:CVE-2020-14318
**DESCRIPTION:**Samba could allow a remote authenticated attacker to obtain sensitive information, caused by a missing permissions check on a directory handle requesting ChangeNotify. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain file name information, and use this information to launch further attacks against the affected system.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191029 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2020-14323
**DESCRIPTION:**Samba is vulnerable to a denial of service, caused by a NULL pointer dereference in the Winbind service. By sending a specially-crafted packet, a local authenticated attacker could exploit this vulnerability to crash the winbind service.
CVSS Base score: 5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/190934 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

For IBM Spectrum Scale V5.0.0 through V5.0.5.4, apply V5.0.5.5 available from FixCentral at

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=5.0.5&platform=All&function=all

For IBM Spectrum Scale V5.1.0, apply V5.1.0.1 available from FixCentral at

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=5.1.0&platform=All&function=all

Workarounds and Mitigations

None