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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.1077 Cumulative Security Update for Internet Explorer (2761451) 13 November 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Internet Explorer 9 Publisher: Microsoft Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2012-4775 CVE-2012-1539 CVE-2012-1538 Original Bulletin: http://technet.microsoft.com/en-us/security/bulletin/ms12-071 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS12-071 - Critical Cumulative Security Update for Internet Explorer (2761451) Published Date: November 13, 2012 Version: 1.0 General Information Executive Summary This security update resolves three privately reported vulnerabilities in Internet Explorer. The vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. This security update is rated Critical for Internet Explorer 9 on Windows clients and Moderate for Internet Explorer 9 on Windows servers. Affected Software Internet Explorer 9 Vulnerability Information CFormElement Use After Free Vulnerability - CVE-2012-1538 A remote code execution vulnerability exists in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted. The vulnerability may corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. CTreePos Use After Free Vulnerability - CVE-2012-1539 A remote code execution vulnerability exists in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted. The vulnerability may corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. CTreeNode Use After Free Vulnerability - CVE-2012-4775 A remote code execution vulnerability exists in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted. The vulnerability may corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. - --------------------------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 iQIVAwUBUKLd2O4yVqjM2NGpAQJlJQ/+N1xKrN8ggBL4qnOdTOXWV1o6Yju2Wy/0 zDsTiLzzRPucrNsx8OMonS3AgRjkm7W1Zs02WXJjPS9MfEOmHgcuTgYLBE+qReY2 s+b8DNc1WF1tc0JjgfFw8BIfgKkm1OTdqrj72NRVQ8B+3fMfLN7d7gkk/nWp7SNv oqRAPSjgiAVKvSHSP3+zoa95N/MQIggWlrdTsQyXXsFljBwiemtnFMXIa3H7aYrZ jtnPFKqK4xIlWWixuXAAt0eR84kIWomg07vH2CmHpnXwiW1z3ImUm0SDM3z2QvwF Cm8WG5ZgYCySjWOgHan1wJSZMm/aNBGv8EV8rvcgGoahp58lOS7EXRi8ALL5MKwd J73qwOHC2Bn7grNWk5CctIo8cbvi/SfS+cfMq96qgWwKy/CH1+RP0z8hPQyjVMF0 queO6Y2zK0Iknp3i7mxk6mLErPAVgVZ9fdIMuwMxpD2ErowIIqqSpz/Qr1qFmJER +a7juBqI81dfIBbhfEk74WCXZDiNoTGj5hULacKpQz8gkyT5YiqJxyEDutW3+QjO xU97GX+TE5PBKbh99hQ+SOHtD11MVctnAtI2kSNQ4SQp84ToghDv6AijsA1uA47/ lfJ0oxLuL6utU5Q0bByzmIeshmunewiucNK3PKQQzhr8+oiu4fGUQMGwvPgmI1A1 NtnTDbOh4OY= =XmHE -----END PGP SIGNATURE-----