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Security Advisories Relating to Symantec Products - Symantec Web Gateway Security Issues

SYM12-011

July 20, 2012

Revisions

 

None

 

Severity

 

CVSS2

Base Score

Impact

Exploitability

CVSS2 Vector

Remote command execution - High

8.33

10.0

6.45

AV:A/AC:L/Au:N/C:C/I:C/A:C

 

SQL Injection - High

8.3

10

6.5

AV:A/AC:L/Au:N/C:C/I:C/A:C

Arbitrary Password Change - High

8.3

10

6.5

AV:A/AC:L/Au:N/C:C/I:C/A:C

 

Exploit Code Publicly Available: No

Overview

Symantec's Web Gateway management console is susceptible to multiple security issues that include remote command execution, local file inclusion, arbitrary password change and SQL injection security issues.    Successful exploitation could result in unauthorized command execution on or access to the management console and backend database.

 

Product(s) Affected

Product

Version

Solution

Symantec Web Gateway

5.0.x.x

Symantec Web Gateway 5.0.3.18 or later apply database update 5.0.0.438 or later

 

Details

CERT/CC notified Symantec of multiple security issues impacting the management console of Symantec Web Gateway. The management console does not properly validate external input.  This incomplete input validation could possibly allow unauthorized remote access with the potential of arbitrary command execution on the console. 

Additionally, an unprivileged user with local access to the management console could potentially manipulate local files to further leverage an identified authentication bypass vulnerability possibly resulting in privileged access on the console. 

Arbitrary code could potentially be injected/included in multiple application scripts used by the Symantec Web Gateway application possibly resulting in arbitrary command execution with application privileges.  One such script can be manipulated to allow an unauthorized user to change any authorized user's password, effectively locking out that user and possibly leveraging unauthorized access in the context of the affected user.

Multiple SQL injection issues were also identified. The successful exploitation of these could potentially result in arbitrary SQL command input to the backend database.

In a normal installation, the Symantec Web Gateway management interface should not be externally accessible from the network environment.  However, an authorized but unprivileged network user or an external attacker able to successfully leverage network access could attempt to exploit these weaknesses.

 

 

Symantec Response

Symantec engineers verified these issues and have released an update to address them. Symantec engineers continue to review related functionality to further enhance the overall security of Symantec Web Gateway. Symantec has released Symantec Web Gateway Database Update 5.0.0.438 to address these issues. Customers should ensure they are on the latest release of Symantec Web Gateway, 5.0.3.18 or later with the Database Update 5.0.0.438 or later.

 

Obtaining the Update

The security update addressing these issues has been pushed to customers as an immediately available update.  For customers with automatic updating enabled the update will automatically be applied.  Customers that do not have automatic updating enabled will need to manually apply the update by clicking "Check for Updates -> Updates" on the Administration->Updates page for Web Gateway Database Updates and Web Gateway Software Updates.

 

To confirm customers are running the latest updates they should 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.

 

NOTE:  Symantec is currently aware that some of these attack vectors and methods as well as proof-of-concept examples may be used in Black Hat 2012 training courses.  However, Symantec is not aware of any malicious activity currently attempting to take advantage of the disclosed vulnerabilities.

Mitigations
Symantec Security Response has released IPS signatures for web attacks against Symantec Web Gateway to help detect and block remote exploit attempts. Signatures are available through normal Symantec security updates.

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

Credit

Offensive Security working through CERT/CC reported local file inclusion, command execution and SQL injection issues.

 

Tenable Network Security working through CERT/CC also reported local file inclusion, command execution, SQL injection and arbitrary password manipulation issues.

 

References

BID: Security Focus, http://www.securityfocus.com, has assigned Bugtraq IDs (BIDs) to these issues for inclusion in the Security Focus vulnerability database.

CVE: These issues are candidates for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. 

 

 

CVE

BID

Description

CVE-2012-2953

BID 54426

command execution

CVE-2012-2957

BID 54429

local file inclusion

CVE-2012-2574

BID 54424

Blind SQL injection

CVE-2012-2961

BID 54425

SQL injection

CVE-2012-2976

BID 54427

shell injection

CVE-2012-2977

BID 54430

unauthorized/unauthenticated password change

 

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.
Please contact secure@symantec.com if you feel you have discovered a security issue in a Symantec product. A member of the Symantec Product 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 Product Security PGP key can be found at the location below.
Symantec has developed a Product Vulnerability Response document outlining the process we follow in addressing suspected vulnerabilities in our products. This document is available below.

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 Product Security. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com

Disclaimer

The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Product Security, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.
* Signature names may have been updated to comply with an updated IPS Signature naming convention. See http://www.symantec.com/business/support/index?page=content&id=TECH152794&key=54619&actp=LIST for more information.
Last modified on: July 20, 2012
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