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Security Advisories Relating to Symantec Products - Symantec LiveUpdate Administrator Cross-Site Request Forgery


March 21, 2011


Revision History





CVSS2 Base Score: 5.39

Impact 6.44, Exploitability 5.54

CVSS2 Vector: AV:A/AC:M/Au:N/C:P/I:P/A:P

Exploit Publicly Available: No



Symantec’s LiveUpdate Administrator (LUA) is susceptible to a cross-site request forgery vulnerability which could result in the execution of HTML or script code in the context of the admin’s browser.


Product(s) Affected




Symantec LiveUpdate Administrator and earlier

Update to LUA 2.3



Symantec’s LiveUpdate Administrator provides infrastructure support for content distribution. Symantec was notified of a cross-site request forgery vulnerability in the management login GUI page.    The login interface fails to properly filter/validate variables in external input.

In a normal installation, the affected management interface should not be accessible external to the network. An authorized but malicious network user or an unauthorized/unprivileged attacker able to gain access to the network and application management interface could attempt to exploit the issue.  Exploitation of this vulnerability requires that once the malicious entry has been submitted to the event log, an authorized admin must sign on to the management interface GUI and access the event log page to trigger the exploit attempt.  If successfully accomplished,  exploitation could possibly result in unauthorized command execution potentially to include application compromise.


Symantec Response

Symantec engineers have verified this issue and released an update to address it. This issue is resolved in Symantec LiveUpdate Administrator version 2.3 which can be obtained by contacting your Symantec Technical Support. Symantec recommends all customers ensure the latest Symantec LiveUpdate Administrator 2.3 is installed to protect against threats of this nature.

Symantec is not aware of any exploitation of, or adverse customer impact from this issue.



Symantec Security Response has created an IPS signature,

24077 - "HTTP Symantec LiveUpdate Administrator CSS"

that detects and blocks attempts to exploit this issue. Signature is 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 or restrict to trusted/authorized systems only.
  • Keep all operating systems and applications updated with the latest vendor patches.
  • 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 would like to thank Nikolas Sotiriu, nikolas sotiriu - it services, for reporting this issue and coordinating with us while Symantec resolved it.



BID: Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID (BID) 46856 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. The CVE initiative has assigned CVE-2011-0545.



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: March 21, 2011
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