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McAfee Security Bulletin - Network Data Loss Prevention 9.3.4 update fixes CVE-2016-6515
Security Bulletins ID:   SB10256
Last Modified:  11/20/2018

Summary

First Published: November 20, 2018
 
 Impact of Vulnerability: Denial of Service (CWE-730, OWASP 2004:A9)
 CVE ID: CVE-2016-6515
 Severity Rating: Medium
 CVSS v3 Base/Temporal Scores: 5.3 / 5.2
 Recommendations: Install or update to Network Data Loss Prevention (NDLP) hotfix_1257114_47914_01.tar.gz for NDLP 9.3.4.201.
Applicable only for VM, 4400, and 5500 platforms.
 Security Bulletin Replacement: None
 Affected Software: NDLP 9.3.x and earlier
 Location of updated software: http://www.mcafee.com/us/downloads/downloads.aspx
 
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Article contents: Vulnerability Description
This update resolves the following security vulnerability.

CVE-2016-6515
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-6515

Affected NDLP components:
  • DLP Manager
  • DLP Monitor
  • DLP iPrevent
  • DLP iDiscover
Remediation
This issue is resolved in NDLP Hotfix hotfix_1257114_47914_01.tar.gz released on November 20, 2018 for VM, 4400, and 5500 platforms.

Apply NDLP Hotfix hotfix_1257114_47914_01.tar.gz to NDLP 9.3.4.201.

Go to the Product Downloads site, and download the applicable product hotfix file:
 
Product Type Version File Name Release Date
NDLP   Hotfix hotfix_1257114_47914_01 hotfix_1257114_47914_01.tar.gz November 20, 2018
 
Download and Installation Instructions
See KB56057 for instructions on how to download McAfee products, documentation, updates, and hotfixes. Review the Release Notes and the Installation Guide, which you can download from the Documentation tab, for instructions on how to install these updates.
Workaround
McAfee strongly recommends that you configure system and network access controls to the below best practices:
  • Change the default root password of the system to a strong, unguessable password.
  • Place the NDLP Management console only on a trusted network.
  • Only give accounts on NDLP systems to personnel with a "need-to-know".
  • Place network restrictions so that only NDLP Monitors can communicate with NDLP Managers.
  • Only use a single network interface card (NIC) for inter-system communications.
  • Present management functions only on a single NIC. Configure the management NIC to accept connections only from a trusted, restricted network.
Acknowledgments
This vulnerability was first disclosed by The MITRE Corporation as a CVE.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not?
For Endpoint products:
Use the following instructions for endpoint or client-based products:
  1. Right-click on the McAfee tray shield icon on the Windows taskbar.
  2. Select Open Console.
  3. In the console, select Action Menu.
  4. In the Action Menu, select Product Details. The product version displays.
For Appliances:
Use the following instructions for Appliance-based products:
  1. Open the Administrator's User Interface (UI).
  2. Click the About link. The product version displays.
What is CVSS?
CVSS, or Common Vulnerability Scoring System, is the result of the National Infrastructure Advisory Council's effort to standardize a system of assessing the criticality of a vulnerability. This system offers an unbiased criticality score between 0 and 10 that customers can use to judge how critical a vulnerability is and plan accordingly. For more information, visit the CVSS website at: http://www.first.org/cvss/.
 
When calculating CVSS scores, McAfee has adopted a philosophy that fosters consistency and repeatability. Our guiding principle for CVSS scoring is to score the exploit under consideration by itself. We consider only the immediate and direct impact of the exploit under consideration. We do not factor into a score any potential follow-on exploits that might be made possible by the successful exploitation of the issue being scored.
 
What are the CVSS scoring metrics?

CVE-2016-6515:

 
Base Score 5.3
Attack Vector (AV) Network (N)
Attack Complexity (AC) Low (L)
Privileges Required (PR) None (N)
User Interaction (UI) None (N)
Scope (S) Unchanged (U)
Confidentiality (C) None (N)
Integrity (I) None (N)
Availability (A) Low (L)
Temporal Score (Overall) 5.2
Exploitability (E) Not Defined (X)
Remediation Level (RL) Workaround (W)
Report Confidence (RC) Not Defined (X)
 
NOTE: The below CVSS version 3.0 vector was used to generate this score.
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/RL:W

Where can I find a list of all Security Bulletins?
All Security Bulletins are published on our external PSIRT website. Go to http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx and click Security Bulletins - Corporate. Security Bulletins are removed when a product is both End of Sale and End of Support (End of Life).
 
How do I report a product vulnerability to McAfee?
If you have information about a security issue or vulnerability with a McAfee product, go to the McAfee PSIRT website at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx and click Report a Security Vulnerability.
 
How does McAfee respond to this and any other reported security flaws?
McAfee's key priority is the security of our customers. If a vulnerability is found within any of McAfee's software or services, we work closely with the relevant security software development team to ensure the rapid and effective development of a fix and communication plan.
 
McAfee only publishes Security Bulletins if they include something actionable such as a workaround, mitigation, version update, or hotfix; otherwise we would simply be informing the hacker community that our products are a target, putting our customers at greater risk. For products that are updated automatically, a non-actionable Security Bulletin might be published to acknowledge the discoverer.
 
To view our PSIRT policy, go to the McAfee PSIRT website at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx, and click About PSIRT.
Resources
To contact Technical Support, log on to the ServicePortal and go to the Create a Service Request page at https://support.mcafee.com/ServicePortal/faces/serviceRequests/createSR:
  • If you are a registered user, type your User ID and Password, and then click Log In.
  • If you are not a registered user, click Register and complete the required fields. Your password and logon instructions will be emailed to you.
Disclaimer
The information provided in this Security Bulletin is provided as is without warranty of any kind. McAfee disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall McAfee or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if McAfee 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 preceding limitation may not apply.
 
Any future product release dates mentioned in this Security Bulletin are intended to outline our general product direction, and they should not be relied on in making a purchasing decision. The product release dates are for information purposes only, and may not be incorporated into any contract. The product release dates are not a commitment, promise, or legal obligation to deliver any material, code, or functionality. The development, release, and timing of any features or functionality described for our products remains at our sole discretion and may be changed or canceled at any time.

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