{"vuid":"VU#329673","idnumber":"329673","name":"BusinessObjects RptViewerAX ActiveX control stack buffer overflow","keywords":["Internet Explorer","IE","ActiveX","COM","buffer overflow","RptViewerAX.dll","RptViewerAX Class","{B20D9D6A-0DEC-4d76-9BEF-175896006B4A}","Business Objects","BusinessObjects.RptViewerAX"],"overview":"The BusinessObjects RptViewerAX ActiveX control contains a stack buffer overflow, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.","clean_desc":"BusinessObjects 6.5 includes an ActiveX control called RptViewerAX, which is provided by RptViewerAX.dll. This ActiveX control is marked as Safe for Scripting and Safe for Initialization, which means that they can be controlled by a web page in Internet Explorer. The RptViewerAX ActiveX control is vulnerable to stack buffer overflow.","impact":"By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user.","resolution":"Apply an update\nAccording to the vendor: This issue has been fixed in critical hot fix CHF74 for the affected software. Users are asked contact support if they are not on or above CFH74 for Business Objects 6.5. Users with valid subscriptions can login to the web site: http://support.businessobjects.com/downloads/service_packs/default.asp\nSelect BusinessObjects 6.5.x a valid login is required. Note that the vulnerable ActiveX control can be installed by using a BusinessObjects web server with Internet Explorer. Users that have obtained the RptViewerAX control in this way may wish to consider the following workarounds:","workarounds":"Disable the RptViewerAX ActiveX control in Internet Explorer The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID: {B20D9D6A-0DEC-4d76-9BEF-175896006B4A} More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Internet Explorer\\ActiveX Compatibility\\{B20D9D6A-0DEC-4d76-9BEF-175896006B4A}] \"Compatibility Flags\"=dword:00000400\nDisable ActiveX Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the \"Securing Your Web Browser\" document.","sysaffected":"","thanks":"This vulnerability was reported by Will Dormann of the CERT/CC.","author":"This document was written by Will Dormann.","public":["http://support.businessobjects.com/downloads/service_packs/default.asp","http://support.microsoft.com/kb/240797"],"cveids":["CVE-2007-6254"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2006-10-27T19:25:58Z","publicdate":"2008-03-18T00:00:00Z","datefirstpublished":"2008-03-18T15:49:40Z","dateupdated":"2008-04-28T20:25:16Z","revision":11,"vrda_d1_directreport":"1","vrda_d1_population":"1","vrda_d1_impact":"4","cam_widelyknown":"2","cam_exploitation":"0","cam_internetinfrastructure":"10","cam_population":"5","cam_impact":"15","cam_easeofexploitation":"15","cam_attackeraccessrequired":"18","cam_scorecurrent":"4.55625","cam_scorecurrentwidelyknown":"11.390625","cam_scorecurrentwidelyknownexploited":"18.984375","ipprotocol":"","cvss_accessvector":"","cvss_accesscomplexity":"","cvss_authentication":null,"cvss_confidentialityimpact":"","cvss_integrityimpact":"","cvss_availabilityimpact":"","cvss_exploitablity":null,"cvss_remediationlevel":"","cvss_reportconfidence":"","cvss_collateraldamagepotential":"","cvss_targetdistribution":"","cvss_securityrequirementscr":"","cvss_securityrequirementsir":"","cvss_securityrequirementsar":"","cvss_basescore":"","cvss_basevector":"","cvss_temporalscore":"","cvss_environmentalscore":"","cvss_environmentalvector":"","metric":4.55625,"vulnote":null}