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Security Advisories Relating to Symantec Products - Symantec Decomposer Engine Security Update

SYM16-015

September 19, 2016

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

 

 

OVERVIEW

Symantec has released an update to address two issues in the RAR file parser component of the antivirus decomposer engine used by multiple Symantec products.

 

Parsing of maliciously formatted RAR container files may cause an application-level denial of service condition.

 

Highest severity issue: Medium
Number of issues: 2

 

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ISSUES

This update applies to the following issues:

TITLE

CVE

SEVERITY

RAR decompression memory corruption

CVE-2016-5310

Medium

RAR decompression OOB Read

CVE-2016-5309

Medium

 

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AFFECTED PRODUCTS

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

 

Norton

All Norton Security and Norton Antivirus products for Windows and Mac have been updated automatically through LiveUpdate.

 

Enterprise

The following Symantec enterprise products are affected.

PRODUCT

SOLUTION

Advanced Threat Protection: Network (ATP)

Automatically updated via LiveUpdate

Email Security.Cloud

Automatically updated via LiveUpdate

Symantec Data Center Security: Server (DCS:S)

Automatically updated via LiveUpdate

Symantec Endpoint Protection (SEP)
Windows

12.1.6 MP5: Automatically updated via LiveUpdate
Versions prior to 12.1.6 MP5: Apply 12.1.6 MP6 update, reboot required

 

See support article for more details

Symantec Endpoint Protection (SEP)
Mac

Automatically updated via LiveUpdate

Apply definitions dated September 17th, 2016 rev. 1 or later. Engine Version: 12.1.4 r11

 

See support article for more details

Symantec Endpoint Protection (SEP)
Linux

Apply 12.1.6 MP6 update, reboot required

Symantec Endpoint Protection
Small Business Enterprise (SEP SBE/SEP.Cloud)

Workstations: Automatically updated via LiveUpdate, reboot may be required
Server: Automatically updated via LiveUpdate

 

See support article for more details

Symantec Endpoint Protection
Cloud (SEPC) for Windows/Mac

Automatically updated via LiveUpdate

Symantec Endpoint Protection
Small Business Edition 12.1
(On-Premise End of Life product)

Follow instructions in support article

CSAPI

Apply 10.0.4 HF02 update

Symantec Protection Engine (SPE)

 

7.8.0: Apply 7.8.0 HF03 update

7.5.5 and prior: Apply 7.5.5 HF01 update

7.5.4 (AWS): Apply 7.5.4 HF02 update

7.0.5 and prior: Apply SPE 7.0.5 HF02 update

 

See support article for more details

Symantec Mail Security
for Domino (SMSDOM)

 

8.1.3: Apply SMSDOM_8.1.3_HF2.2 update

8.1.2: Apply SMSDOM_8.1.2_HF2.3 update

8.0.9 and prior: Apply SMSDOM_8.0.9_HF2.1 update

 

See support article for more details

Symantec Mail Security
for Microsoft Exchange (SMSMSE)

 

7.5.4 and prior: Apply SMSMSE_7.5_3966008_VHF2.2 update

7.0.4 and prior: Apply SMSMSE_7.0_3966002_HF2.1 update

6.5.8: Apply SMSMSE_6.5.8_3968140_HF2.3 update

 

See support article for more details

Symantec Protection
for SharePoint Servers (SPSS)

 

6.0.7: Apply SPSS_6.0.7_HF_2.7 update

6.0.6: Apply SPSS_6.0.6_HF_2.6 update
6.0.3 to 6.0.5: Apply SPSS_6.0.3_To_6.0.5_HF_2.5 update

 

See support article for more details

Symantec Messaging Gateway (SMG)

Apply SMG 10.6.2 update

Symantec Messaging Gateway
for Service Providers (SMG-SP)

10.6: Apply SMG-SP 10.6 patch 259 update

10.5: Apply SMG-SP 10.5 patch 260 update

Symantec Web Gateway

Automatically updated via LiveUpdate

Symantec Web Security.Cloud

Automatically updated via LiveUpdate

 

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ISSUE DETAILS

 

RAR decompression memory corruption

CVE-2016-5310

BID: 92866

Severity: Medium (CVSSv3: 6.9) - AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

Impact: Denial of service

Exploitation: None

Date patched: September 19, 2016
 

Parsing of maliciously formatted RAR container files may cause memory corruption. This may cause an application-level denial of service condition but does not allow any additional exploit opportunities.

 

 

RAR decompression OOB read

CVE-2016-5309

BID: 92868

Severity: Medium (CVSSv3: 4.8) - AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Impact: Denial of service

Exploitation: None

Date patched: September 19, 2016
 

Parsing of maliciously formatted RAR container files may cause an out-of-bounds (OOB) read error. This may cause an application-level denial of service condition but does not allow any additional exploit opportunities.

 

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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 to 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

Tavis Ormandy of Google Project Zero (CVE-2016-5309, CVE-2016-5310)

 

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REVISIONS

9/19/2016 – Added additional information to SEP for Mac in affected product table regarding updates

 

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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:
Symantec Product Vulnerability Management PGP Key
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: September 19, 2016
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