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Security Advisories Relating to Symantec Products - Symantec Workspace Streaming XMLRPC Unauthenticated Access

SYM14-009

May 12, 2014

Revisions

 

None

 

Severity

 

CVSS2

Base Score

Impact

Exploitability

CVSS2 Vector

SWS Unauthenticated XMLRPC Access - High

7.9

10

5.5

AV:A/AC:M/AU:N/C:C/I:C/A:C


Overview

The management server for Symantec Workspace Streaming (SWS) does not properly handle external XMLRPC requests, which could potentially allow unauthorized access to restricted server-side data and server functionality.  A remote user could potential create a backdoor on the targeted server resulting in unauthorized privilege access.

 

Affected Products

Product

Version

Build

Solution(s)

Symantec Workspace Streaming

7.5.x and prior

All

Update to SWS 7.5.0.749 ( 7.5 SP1)


Details

Symantec Workspace Streaming server does not properly handle incoming HTTPS XMLRPC requests.   This could potentially allow a malicious individual unauthorized access to sensitive server-side files and functionality.  By submitting a sufficiently crafted XMLRPC request, a malicious user could place arbitrary code on the server that, if successfully crafted would create an unauthorized access point on the server.  This could potentially provide the malicious individual application-level access to the SWS server.

In a normal installation, a Symantec Workspace Streaming Server should not be accessible externally from the network environment which should limit this to an authorized but unprivileged network user attempt.  However, an external attacker able to successfully leverage network access by enticing an authorized user to visit a malicious site or click on a malicious HTML email could possibly further leverage that access to attempt to exploit this issue.

 

Symantec Response
Symantec product engineers have released SWS 7.5SP1 to resolve this issue.
Symantec engineers reviewed and continue to review all product functionality to further enhance the overall security of Symantec Workspace Streaming. 

Symantec recommends customers apply the available update as soon as possible to avoid this type of issue.  Symantec is not aware of exploitation of or adverse customer impact from this issue.

Update Information

Symantec Workspace Steaming 7.5SP1 is available through Symantec File Connect.

 

Mitigations
Symantec Security Response has released IPS signature 27339 - “Symantec Workspace Streaming XMLRPC RCE" 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 the following:

  • Restrict access to administrative or management systems to authorized privileged users.
  • Restrict remote access, if required, 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.

Credit
Symantec thanks
Andrea Micalizzi (rgod) working through HP’s Zero Day Initiative(ZDI) for reporting this and ZDI for working with us as we addressed it.

 

 

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-2014-1649

BID 67189

Symantec Workspace Unauthenticated XMLRPC Access

 

 

 

 

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: May 12, 2014
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