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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.1063 Security Advisories Relating to Symantec Products - Symantec Workspace Virtualization Local Kernel Elevation of Privilege 5 August 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Symantec Workspace Virtualization Publisher: Symantec Operating System: Windows Server 2008 Windows Server 2008 R2 Windows Server 2003 Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2013-4679 Original Bulletin: http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&suid=20130801_02 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Advisories Relating to Symantec Products - Symantec Workspace Virtualization Local Kernel Elevation of Privilege SYM13-011 August 1, 2013 Revisions None Severity CVSS2 Impact Exploitability CVSS2 Vector Base Score Symantec Workspace Virtualization Local Kernel EoP - Medium 6.6 10.0 2.7 AV:L/AC:M/AU:S/C:C/I:C/A:C Exploit Publicly Available: Yes Overview Symantec's Workspace Virtualization, when activated/enabled on a client, is susceptible to a local access kernel elevation of privilege. The application fails to do sufficient bounds checking when passing user input to the underlying operating system. This issue could potentially allow an authenticated but non-privileged local user to run arbitrary code with elevated privileges on the underlying system. Exploit code targeting this issue is public. Affected Products Product Version Build Solution(s) Symantec Workspace 6.x All prior to Symantec Workspace Virtualization 6.4.1895.0 Virtualization 6.4.1953.0 Non-Affected Products Product Version Build Symantec Workspace 6.4.0.757 and All Streaming prior Details Symantec is aware of a publicly posted local kernel elevation of privilege exploit against Symantec's Workspace Virtualization application. The application does not do sufficient bounds checking prior to passing user data to the operating system. NOTE: Symantec Workspace Virtualization is in a vulnerable state ONLY when at least one virtual application layer is enabled on the client system. A virtual application running in the active layer is not required but, the Symantec Workspace Virtualization application must be in the active mode. Symantec Workspace Virtualization application installed on a client but not activated/enabled is NOT vulnerable to this issue. An authorized but unprivileged user with a local account could attempt to run malicious code of their choosing on the host client system. A non-authorized attacker would need to acquire unauthorized access to a local client account or be able to entice an authorized user to download malicious code to their system to execute when the application is active. Successful exploitation could potentially result in a system crash, access to unauthorized system information or possible elevation of privilege on the system. Symantec Response Symantec reviewed and validated this issue as impacting Symantec Workspace Virtualization. Symantec strongly recommends customers upgrade to Symantec Workspace Virtualization version 6.4.1953.0 at their earliest opportunity to protect from any attempts to target this issue. Symantec is not aware of exploitation of or adverse customer impact from this issue. Update Information Symantec Workspace Virtualization 6.4.1953.0 is available through customers' normal download locations, http://www.symantec.com/business/support/index?page=content&id=HOWTO85016. Best Practices As part of normal best practices, Symantec strongly recommends that customers: Restrict access of administration or management systems to 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 exploit by threats. 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 References 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: The issue is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. CVE BID Description CVE-2013-4679 61349 Symantec Workspace Virtualization Local Kernel EoP 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 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 1, 2013 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. 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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