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Security Advisories Relating to Symantec Products - Symantec Endpoint Encryption / Symantec Encryption Desktop DoS

SYM17-010

October 9, 2017

Overview | Issues | Affected Products | Mitigation | Best Practices | Acknowledgements | Revisions

 

 

OVERVIEW

Symantec has released an update to address four issues in the Symantec Endpoint Encryption / Symantec Encryption Desktop products.

 

Highest severity issue: Medium
Number of issues: 4

 

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ISSUES

This update applies to the following issues:

TITLE

CVE

SEVERITY

Symantec Endpoint Encryption DoS prior to SEE 11.1.3HF3

CVE-2017-13675

Medium

Symantec Encryption Desktop DoS prior to SED 10.4.1 MP2HF1

CVE-2017-13679

Medium

Symantec Encryption Desktop KML prior to SED 10.4.1 MP2HF1

CVE-2017-13682

Medium

Symantec Endpoint Encryption KML prior to SEE 11.1.3HF3

CVE-2017-13683

Medium

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AFFECTED PRODUCTS

Symantec has verified the issues and addressed them in product updates as outlined below.

 

Enterprise

The following Symantec enterprise products are affected.

PRODUCT

SOLUTION

Symantec Endpoint Encryption prior to SEE 11.1.3HF3

Upgrade to Symantec Endpoint Encryption SEE 11.1.3HF3

Symantec Encryption Desktop prior to SED 10.4.1 MP2HF1

Upgrade to Symantec Encryption Desktop SED 10.4.1 MP2HF1

 

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ISSUE DETAILS

 

Symantec Endpoint Encryption Denial of Service

CVE-2017-13675

BID: 101089

Severity: Medium (CVSSv3: 4.2) AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Impact: Denial of service

Exploitation: None

Date patched: October 6, 2017
 

A denial of service (DoS) attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network. DoS attacks can occur when a system becomes flooded with specific network requests or subversive operations that can cause the resourced system to become unresponsive.

 

Symantec Encryption Desktop Denial of Service

CVE-2017-13679

BID: 101090

Severity: Medium (CVSSv3: 4.2) AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Impact: Denial of service

Exploitation: None

Date patched: October 6, 2017
 

A denial of service (DoS) attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network. DoS attacks can occur when a system becomes flooded with specific network requests or subversive operations that can cause the resourced system to become unresponsive.

 

Symantec Encryption Desktop Kernel Memory Leak

CVE-2017-13682

BID: 101497

Severity: Medium (CVSSv3: 5.7) AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Impact: Denial of service

Exploitation: None

Date patched: October 6, 2017
 

A kernel memory leak is a type of resource leak that can occur when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released. In object-oriented programming, a memory leak may happen when an object is stored in memory but cannot be accessed by the running code.

 

Symantec Endpoint Encryption Kernel Memory Leak

CVE-2017-13683

BID: 101498

Severity: Medium (CVSSv3: 5.7) AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Impact: Denial of service

Exploitation: None

Date patched: October 20, 2017
 

A kernel memory leak is a type of resource leak that can occur when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released. In object-oriented programming, a memory leak may happen when an object is stored in memory but cannot be accessed by the running code.

 

 

 

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MITIGATION

This issue was validated by the product team engineers. A Symantec Endpoint Encryption / Symantec Encryption Desktop set of updates, versions SEE 11.1.3HF3 and SED 10.4.1 MP2HF1, have been released which address the aforementioned vulnerabilities. Note that the latest releases and patches for Symantec Endpoint Encryption / Symantec Encryption Desktop are available to customers through normal support channels.

Additional note: All customers should apply the new patch, released October 23 (SEE 11.1.3HF3). This includes both customers that have already applied the previous patch (SEE 11.1.3HF2) as well as those that have not. All fixes are cumulative.

At this time, Symantec is not aware of any exploitations or adverse customer impact from these issues.

 

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BEST PRACTICES

Symantec recommends the following measures to reduce risk of attack:

  • Restrict access to administrative or management systems to authorized privileged users.
  • Restrict remote access to trusted/authorized systems only.
  • Run under the principle of least privilege, where possible, to limit the impact of potential exploit.
  • Keep all operating systems and applications current with vendor patches.
  • Follow a multi-layered approach to security. At a minimum, run both firewall and anti-malware applications to provide multiple points of detection and protection for both inbound and outbound threats.
  • Deploy network and host-based intrusion detection systems to monitor network traffic for signs of anomalous or suspicious activity. This may aid in the detection of attacks or malicious activity related to the exploitation of latent vulnerabilities.

 

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ACKNOWLEDGEMENTS

  • Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13675)
  • Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13679)
  • Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13682)
  • Kyriakos Economou (@kyREcon) on behalf of Nettitude: https://www.nettitude.com/ (CVE-2017-13683)

 

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REVISIONS

-          *Advisory amended on October 23rd, 2017

 

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REPORTING VULNERABILITIES TO SYMANTEC

Symantec takes the security and proper functionality of our products very seriously. As founding members of the Organization for Internet Safety (OISafety), Symantec supports and follows responsible disclosure guidelines.
Symantec has developed a Software Security Vulnerability Management Process document outlining the process we follow in addressing suspected vulnerabilities in our products.
Symantec Corporation firmly believes in a proactive approach to secure software development and implements security review into various stages of the software development process. Additionally, Symantec is committed to the security of its products and services as well as to its customers’ data. Symantec is committed to continually improving its software security process.
This document provides an overview of the current Secure Development Lifecycle (SDLC) practice applicable to Symantec’s product and service teams as well as other software security related activities and policies used by such teams. This document is intended as a summary and does not represent a comprehensive list of security testing and practices conducted by Symantec in the software development process.
Please contact secure@symantec.com if you believe you have discovered a security issue in a Symantec product. A member of the Symantec Software Security team will contact you regarding your submission to coordinate any required response. Symantec strongly recommends using encrypted email for reporting vulnerability information to secure@symantec.com.
The Symantec Software Security PGP key can be found at the following location:
COPYRIGHT (C) BY SYMANTEC CORP.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Software Security. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.
Last modified on: October 9, 2017
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