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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0821 Symantec Web Gateway Multiple Security Issues 29 August 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Symantec Messaging Gateway Publisher: Symantec Operating System: Network Appliance VMWare ESX Server Impact/Access: Increased Privileges -- Remote/Unauthenticated Access Privileged Data -- Remote/Unauthenticated Modify Arbitrary Files -- Existing Account Cross-site Request Forgery -- Remote with User Interaction Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2012-3581 CVE-2012-3580 CVE-2012-3579 CVE-2012-0308 CVE-2012-0307 Original Bulletin: http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120827_00 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Advisories Relating to Symantec Products - Symantec Messaging Gateway Security Issues SYM12-013 August 27, 2012 Revisions None Severity CVSS2 Impact Exploitability CVSS2 Vector Base Score Cross Site Scripting Request Forgery (CSRF) Backdoor - High 9.3 10 8.6 AV:N/AC:M/Au:N/C:C/I:C/A:C SSH Account Default Password Elevation of Privilege - High 7.9 10 5.5 AV:A/AC:M/Au:N/C:C/I:C/A:C Web Application Modification - High 7.7 10 5.1 AV:A/AC:L/Au:S/C:C/I:C/A:C Cross Site Scripting (XSS) Code Execution - High 7.5 6.4 10 AV:N/AC:L/Au:N/C:P/I:P/A:P Information Disclosure - Low 3.3 2.9 6.5 AV:A/AC:L/Au:N/C:P/I:N/A:N Overview Symantec's Messaging Gateway management console is susceptible to several security issues including cross-site scripting/cross-site request forgery, an SSH account with a default password and potential web application modifications. Successful exploitation could result in unauthorized command execution on or access to the management console and the operating system. Product(s) Affected Product Version Solution Symantec Messaging Gateway 9.5.x Symantec Messaging Gateway 10.0 Details Symantec was notified of several security issues impacting Symantec's Messaging Gateway management console. Issues the affected versions of Symantec Messaging Gateway may be susceptible to include: * Multiple XSS issues as a result of insufficient validation/sanitation of external web or incoming malicious email content. * A CSRF issue that, successfully exploited, could potentially allow unauthorized administrative access. * An SSH default passworded account that could potentially be leveraged by an unprivileged user to attempt to gain additional privilege access. * The capability to potentially modify the underlying web application with elevated privileges once attacker has gained initial access to the Symantec Messaging Gateway management interface. * The affected applications disclose excessive component versioning information during successful reconnaissance that could potentially be leveraged in future unauthorized access attempts. In a normal installation, neither the Symantec Messaging Gateway appliance management interface nor the system hosting the software application would be externally accessible from the network environment nor used to access external web sites. These restrictions reduce exposure to the majority of these issues from external sources. However, an authorized but unprivileged network user or an external attacker able to successfully leverage network access or entice an authorized user to access a malicious URL could attempt to exploit these issues. Symantec Response Symantec engineers verified the issues and released an update to address them. Symantec engineers continue to review all functionality to further enhance the overall security of Symantec Messaging Gateway. Symantec strongly recommends Symantec Messaging Gateway customers update to the latest release of Symantec Messaging Gateway 10.0 at their earliest opportunity to protect from any attempts to target these types of issues. Symantec knows of no exploitation of or adverse customer impact from this issue. Symantec Messaging Gateway 10.0 is currently available through normal 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. * 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 Symantec credits Ben Williams with NGS Secure, [91]NCC Group for reporting these issues to us and coordinating with us as we resolved them Symantec credits Stefan Viehböck, with SEC Consult www.sec-consult.com for also reporting the SSH default password account. References BID: Security Focus, [93]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 ([94]http://cve.mitre.org), which standardizes names for security problems. CVE BID Description CVE-2012-0307 BID 55138 Cross-Site Scripting (XSS) issues CVE-2012-0308 BID 55137 Cross-Site Scripting Request Forgery (CSRF) Backdoor CVE-2012-3579 BID 55143 SSH Account Default Password CVE-2012-3580 BID 55141 Web Application Modification CVE-2012-3581 BID 55142 Information Disclosure __________________________________________________________________ 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. Symantec Vulnerability Response Policy Symantec Product Vulnerability Management PGP Key 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 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: August 27, 2012 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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