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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.1505 Citrix XenServer Multiple Security Updates 23 October 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Citrix XenServer Publisher: Citrix Operating System: Citrix XenServer Impact/Access: Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2013-4368 CVE-2013-4361 CVE-2013-4355 Reference: ESB-2013.1440 ESB-2013.1375 Original Bulletin: http://support.citrix.com/article/CTX139295 - --------------------------BEGIN INCLUDED TEXT-------------------- Citrix XenServer Multiple Security Updates Document ID: CTX139295 Created On: Oct 21, 2013 Updated On: Oct 21, 2013 Average Rating: 5 (1 ratings) View products this document applies to link to products this document applies to Severity: Low Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including version 6.2. The following vulnerabilities have been addressed: - CVE-2013-4355: Information leaks through I/O instruction emulation - CVE-2013-4361: Information leak through fbld instruction emulation - CVE-2013-4368: Information leak through outs instruction emulation Mitigating Factors The information leaks can only be attempted by administrators of guest VMs, or by users that have been specifically assigned memory-mapped I/O access. The information leaked consists of a few bytes at a location outside the attacker's control. What Customers Should Do Hotfixes have been released to address this issue. Citrix recommends that affected customers install the relevant hotfix, which can be downloaded from the following locations: Citrix XenServer 6.2: CTX139308 - Hotfix XS62E009 - For XenServer 6.2.0 Citrix XenServer 6.1: CTX139307 - Hotfix XS61E033 - For XenServer 6.1.0 Citrix XenServer 6.0.2: CTX139305 - Hotfix XS602E029 - For XenServer 6.0.2 Customers using Citrix XenServer 6.0.2 in the Common Criteria evaluated configuration should apply the following hotfix: CTX139306 - Hotfix XS602ECC007 - For XenServer 6.0.2 Common Criteria Citrix XenServer 6.0.0: CTX139304 - Hotfix XS60E035 - For XenServer 6.0 Citrix XenServer 5.6 Service Pack 2: CTX139303 - Hotfix XS56ESP2033 - For XenServer 5.6 Service Pack 2 Citrix XenServer 5.6 Feature Pack 1: CTX139302 - Hotfix XS56EFP1021 - For XenServer 5.6 Feature Pack 1 Citrix XenServer 5.6: CTX139300 - Hotfix XS56E022 - For XenServer 5.6 Customers using Citrix XenServer 5.6 in the Common Criteria evaluated configuration should apply the following hotfix: CTX139301 - Hotfix XS56ECC010 - For XenServer 5.6 Common Criteria What Citrix Is Doing Citrix is notifying customers and channel partners about this potential security issue. This article is also available from the Citrix Knowledge Center at http://support.citrix.com/. Obtaining Support on This Issue If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at http://www.citrix.com/site/ss/supportContacts.asp. Reporting Security Vulnerabilities to Citrix Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. If you would like to report a security issue to Citrix, please compose an e-mail to secure@citrix.com stating the exact version of the product in which the vulnerability was found and the steps needed to reproduce the vulnerability. This document applies to: XenServer 5.6 XenServer 5.6 Common Criteria XenServer 5.6 FP 1 XenServer 5.6 SP 2 XenServer 6.0 XenServer 6.0.2 XenServer 6.0.2 Common Criteria XenServer 6.1.0 XenServer 6.2.0 - --------------------------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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUmc1rhLndAQH1ShLAQLXoxAAhRyI5H0xyDL0oOeg818o+GAqzmTWEsGH nN69BHiwpN+oReUXxyxNNmGzzIveDVAp1mYEzvCCY4Ixu6mhQvgR4ZTph80rlpXa ToEyGBn8G2Z2iiSebn6wM7oXjUr3wkOn6znViWiZzx9cOS2O19h34wq+zC/F+ceO g1i24MrOeK+kbwcUPln0Qrwe1sN/WzkZokCuq4x2hdngb4LqxnKwUYAUl+YE1K2K brB0Qq+6ahYFlky5kdjqC5I86GMM2YTxXjKS1/FGA8PqXkCpjmp/tbtq4YgTZVBC uHb5C7chKCAbssHE8M4lPVTh9w45afZhFCYWPNkoiAajFeMhryB61AkfB65tb00V KdHwdbJ9ZWq+Q2gPUcUXZPtTNWSH0tUZUZ6EDPDeaj6EDAxCFMKnDYIc7Ux0VIgi OWfiDUOMYp9V7NO66ZolD8SPXVDfmqOCVeCkqkcPYwYIjkYYavyZwoR/aYl43rC7 m9/UVWioZeWY34+jjjHoqKLashJc+8VZqn6PTbiW/ttGlCHPKVQJmeYcOiO2iceF Q0fjXjWBiI2/Cl1fTNd0zBGEgz+gI7olZfFYNMiX+Ggy7Eun3tNexes9jfbeJ0vj UIWSSXaNpc5bgbJKwW23ErmZ8f1kA4OBEjv687ep7zI541bkW1oLSjXjzGYHURjA /ZpdiPj8s8g= =jpx/ -----END PGP SIGNATURE-----