Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0978 Novell GroupWise iCal TZNAME Heap Overflow Vulnerability 28 September 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: GroupWise 8.0x Publisher: iDEFENSE Operating System: SUSE Netware Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2011-0333 Original Bulletin: https://labs.idefense.com/verisign/intelligence/2009/vulnerabilities/display.php?id=943 - --------------------------BEGIN INCLUDED TEXT-------------------- iDefense Security Advisory 09.26.11 http://labs.idefense.com/intelligence/vulnerabilities/ Sep 26, 2011 I. BACKGROUND GroupWise is Novell's messaging platform, and includes support for email, calendaring, and instant messaging. More information is available at the following website: http://www.novell.com/products/groupwise/ II. DESCRIPTION Remote exploitation of a heap overflow vulnerability in Novell Inc.'s GroupWise could allow an attacker to execute arbitrary code with the privileges of the affected service. This vulnerability is present in the calendar processing code, which resides within the GroupWise Internet Agent (GWIA) process. The vulnerability occurs when parsing a malformed time zone description field (TZNAME). A heap based buffer overflow can be triggered by supplying an excessively long string when copying the time zone name. III. ANALYSIS Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the affected service. On Windows, the GWIA process runs with SYSTEM privileges. In order to exploit this vulnerability, an attacker simply needs to send an email to a valid user, and attach the malicious calendar file to the email. The targeted user does not need to download or view the email; processing of the iCal file occurs automatically on the server as soon as the email is received by the server. IV. DETECTION Novell GroupWise 8.0x up to (and including) 8.02HP2 are vulnerable. V. WORKAROUND iDefense is currently unaware of any workaround for this issue. VI. VENDOR RESPONSE Novell has released fixes which addresses this issue. Information about downloadable vendor updates can be found by clicking on the URLs shown. http://www.novell.com/support/search.do?cmd=displayKC&docType=kc&externalId=7009208&sliceId=1&docTypeID=DT_TID_1_1&dialogID=268443893&stateId=0%200%20268449181 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2011-0333 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 07/20/2011 Initial Vendor Notification 07/21/2011 Vendor Reply 09/26/2011 Coordinated Public Disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2011 Verisign Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission. 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. - --------------------------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 iQIVAwUBToJ37+4yVqjM2NGpAQKuTw//e512nZW/W5C/D5PCqDSUzomv69Avh3Zc 0XvoOjZvFrce+xH5k368bxDlOtGf3nD7RSnJs+oBnIbPLUdA99FftCsuC/uTBVuL q6OwUMOagxQ3vpIcTeikoqsqFIFwVRZe7Iu1T10Vgmys56ql0FXjSupkLG4T0Ccy l9u4b2QgWsCtAA0MtcZRDaZVDhCJNd/gsqh9pjgLCkKMCS2cwwy56ll9zczuiDfV 5pn4LAYAfNPqmnMQrChS0AVPt3uVZ/hSDGhvdX7uE6vUdIS02i75tOosTpr0S5wP EjBfk9DCvpqInE9noRrqSUUdv97iXgBJjXIMRpnhTn/u+LUsQXd5J22D9IgBZlMy S/MEMA3BFEQdlWQRTV4f5cYEl5cVrgG11/Le7GXdYTCLNpPINDQHuVIgJO6wQfr0 07Jzux1BpWMVDXwB/5q5QTQI4FX0L2B1kZH44vgzV21aI5YSwJdIINr7B3PaSs2g g5whvlc8ZCRuvlKi5jc10IzqA5HEJZRxwQeWRSeVOq71+e6AO5Wttc9JLxitu5BT NnCOWUdX4U44dTVen7//Dej6Hx5hT31d9ANFmffFaHL94o8fi9BmUA49JHytWHfr g9FPBv8wgpS5CDJUQBvU97XZK4XYG3QU+a+gwvo1tZgr7j9kepENhsI1jeAiYQuh 408tCJOMbvU= =Zi02 -----END PGP SIGNATURE-----