ESB-2017.1551 - [Win][UNIX/Linux][Virtual] EMC Avamar Server Software: Multiple vulnerabilities 2017-06-21

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1551
             ESA-2017-054: EMC Avamar Multiple Vulnerabilities
                               21 June 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:          EMC Avamar Server Software
Publisher:        EMC
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
                  Virtualisation
Impact/Access:    Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                  Create Arbitrary Files          -- Remote/Unauthenticated
Resolution:       Patch/Upgrade
CVE Names:        CVE-2017-4990 CVE-2017-4989 

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ESA-2017-054: EMC Avamar Multiple Vulnerabilities 

EMC Identifier: ESA-2017-054
CVE Identifiers:
CVE-2017-4989, CVE-2017-4990

Affected products:
EMC Avamar Server Software 7.4.1-58, 7.4.0-242 (CVE-2017-4990)

EMC Avamar Server Software 7.3.1-125, 7.3.0-233, 7.3.0-226 (CVE-2017-4989, 
CVE-2017-4990)

EMC Avamar Server Software 7.2.1-32, 7.2.1-31, 7.2.0-401 (CVE-2017-4989)

Severity Rating: See below for individual scores

Summary:  
EMC Avamar Server contains security vulnerabilities that may potentially be 
exploited by malicious users to compromise the affected system.

Details:  

EMC Avamar Server Authentication Bypass Vulnerability (CVE-2017-4989)

An unauthenticated remote attacker may potentially bypass the authentication 
process to gain access to the system maintenance page. This may be exploited
by an attacker to view sensitive information, perform software updates, or 
run maintenance workflows.

CVSS v3 Base Score:  8.2 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)

EMC Avamar Server Unauthorized File Upload Vulnerability (CVE-2017-4990)

An unauthorized attacker may leverage the file upload feature of the system 
maintenance page to load a maliciously crafted file to any directory which 
could allow the attacker to execute arbitrary code on the Avamar Server 
system.

CVSS v3 Base Score: 10.0 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Resolution:  

Resolutions are available for the following EMC Avamar releases:
Avamar Server Version 7.4.1 with Hotfix 279294
Avamar Server Version 7.3.1 with Hotfix 276676
Avamar Server Version 7.2.1 with Hotfix 277897

EMC recommends all customers apply the appropriate hotfix at the earliest 
opportunity. 

Link to remedies:

To upgrade your EMC Avamar system, contact your account representative or 
EMC Remote Proactive Customer Support at https://support.emc.com and refer to
this article number.

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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