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ESA-2016-096: EMC Celerra, VNX1, VNX2 and VNXe SMB NTLM Authentication Weak
EMC Identifier: ESA-2016-096
CVE Identifier: CVE-2016-0917
Severity Rating: CVSS v3 Base Score: 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
EMC Software: EMC VNX2 File OE versions prior to 188.8.131.52
EMC Software: EMC VNX1 File OE versions prior to 184.108.40.206
EMC Software: EMC VNXe (all supported versions)
EMC Software: EMC Celerra (all supported versions)Note: EMC Unity (all
versions) is not affected by this issue.
SMB implementation in EMC Celerra, VNX1, VNX2 and VNXe are affected by an NTLM
authentication weak nonce vulnerability that could potentially be exploited by
malicious users to compromise the affected system.
An unauthenticated remote attacker may potentially exploit the NTLM
challenge-response authentication protocol causing the server to generate
duplicate challenges/nonces to potentially access the SMB service of the target
system under the credentials of an authorized user. Depending on the privileges
of the user, the attacker will be able to obtain and modify files on the target
system and execute arbitrary code. This issue is similar to the Microsoft
Windows SMB implementation issue that is described under CVE-2010-0231
The following releases contain resolutions for this issue:
- - EMC VNX2 File OE versions 220.127.116.11
- - EMC VNX1 File OE versions 18.104.22.168
EMC recommends all customers upgrade at the earliest opportunity. This advisory
will be updated when fixes for EMC VNXe will be available. There is currently
no plan to release fixes for EMC Celerra based on the current support lifecycle
of the product.
Customers that are unable to upgrade should use Kerberos authentication instead
Link to remedies:
Registered EMC Support customers can download EMC VNX2 and VNX1 software from
the EMC Online Support web site at https://support.emc.com.
[The following is standard text included in all security advisories. Please do
not change or delete.]
Read and use the information in this EMC Security Advisory to assist in
avoiding any situation that might arise from the problems described herein. If
you have any questions regarding this product alert, contact EMC Software
Technical Support at 1-877-534-2867.
For an explanation of Severity Ratings, refer to EMC Knowledgebase solution
emc218831. EMC recommends all customers take into account both the base score
and any relevant temporal and environmental scores which may impact the
potential severity associated with particular security vulnerability.
EMC recommends that all users determine the applicability of this information
to their individual situations and take appropriate action. The information set
forth herein is provided "as is" without warranty of any kind. EMC disclaims
all warranties, either express or implied, including the warranties of
merchantability, fitness for a particular purpose, title and non-infringement.
In no event, shall EMC or its suppliers, be liable for any damages whatsoever
including direct, indirect, incidental, consequential, loss of business profits
or special damages, even if EMC or its suppliers have been advised of the
possibility of such damages. Some states do not allow the exclusion or
limitation of liability for consequential or incidental damages, so the
foregoing limitation may not apply.
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