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Security Advisories Relating to Symantec Products - Symantec Web Gateway OS Authenticated Command Injection


December 16, 2014








Base Score



CVSS2 Vector

Symantec Web Gateway Operating System Command Injection - Medium






Symantec's Web Gateway (SWG) Appliance management console is susceptible to operating system command injection by an authenticated but less-privileged user.

Product(s) Affected




Symantec Web Gateway Appliance

5.2.1 and prior

Symantec Web Gateway 5.2.2

 NOTE:  Customers should always ensure they are running the latest updates available.


Symantec was notified of an OS command injection vulnerability in PHP script which impacts the SWG management console.  The results of successful exploitation could potentially range from unauthorized disclosure of sensitive data to possible unauthorized access to the Symantec Web Gateway Appliance.

Unauthenticated arbitrary commands can potentially be injected into existing application scripts accessible though the SWG console’s interface if the attacker already has some level of privileged access.  This issue is of limited scope and impact and has been addressed in SWG 5.2.2.


In a normal installation, the Symantec Web Gateway management interface should not be externally accessible from the network environment and would require access to the network either by an authorized network user or an external attacker able to leverage network access. 

Symantec Response

Symantec engineers have verified these issues and have addressed them in SWG 5.2.2.  Symantec continues to review related functionality in order to further enhance the overall security of the Symantec Web Gateway product.


Symantec has released Symantec Web Gateway 5.2.2, currently available to customers through normal support locations.  Customers should ensure they are on this latest release.  To confirm customers are running the latest updates, check the "Current Software Version -> Current Version" on the Administration -> Updates page.  Alternatively, customers can click the "Check for Updates" button on the Administration -> Updates page to verify that they are running the latest software version.


Symantec will be releasing the following IPS signature:

·         Attack: Symantec Web Gateway Command Injection Vulnerability

These detections will be available through normal Symantec security update channels.

Best Practices

As part of normal best practices, Symantec strongly recommends:

·         Restrict access to administration or management systems to privileged users.

·         Disable remote access if not required or restrict it to trusted/authorized systems only.

·         Where possible, limit exposure of application and web interfaces to trusted/internal networks only.

·         Keep all operating systems and applications updated with the latest vendor patches.

·         The Symantec Web Gateway software and any applications that are installed on the Symantec Web Gateway can ONLY be updated with authorized and tested versions distributed by Symantec.

·         Follow a multi-layered approach to security. Run both firewall and anti-malware applications, at a minimum, 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 detection of attacks or malicious activity related to exploitation of latent vulnerabilities.


Symantec thanks Egidio Romano, Secunia Research for reporting this issue and for providing full coordination while it was resolved by Symantec.



BID: Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID (BID) to this issue for inclusion in the Security Focus vulnerability database.


CVE: This issue is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems.







BID 71620

SWG OS command Injection







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:
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: December 16, 2014
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