{"vuid":"VU#583108","idnumber":"583108","name":"Microsoft ASN.1 Library improperly decodes constructed bit strings","keywords":["Microsoft","Abstract Syntax Notation 1","ASN.1","integer overflow","MSASN1.DLL","ASN1BERDecBitString()","ASN1BERDecBitString2()","DecMemReAlloc()","ASN1bitcpy()","MS04-007"],"overview":"The Microsoft ASN.1 Library improperly decodes constructed bit strings which could allow an unauthenticated, remote attacker to execute arbitrary code with SYSTEM privileges.","clean_desc":"Abstract Syntax Notation number One (ASN.1) is an international standard used to describe and transmit data packets between applications and across networks. There is an integer overflow vulnerability in the BER decoding function of the Microsoft ASN.1 Library. This vulnerability could allow an unauthenticated, remote attacker to execute arbitrary code with SYSTEM privileges on the affected system.","impact":"An unauthenticated, remote attacker could execute arbitrary code with SYSTEM privileges.","resolution":"Apply Patch\nApply the patch (828028) referenced in Microsoft Security Bulletin MS04-007.","workarounds":"","sysaffected":"","thanks":"This vulnerability was reported by eEye Digital Security.","author":"This document was written by Damon Morda.","public":["http://www.microsoft.com/technet/security/bulletin/MS04-007.asp","http://support.microsoft.com/default.aspx?scid=252648","http://www.eeye.com/html/Research/Advisories/AD20040210-2.html","http://www.itu.int/ITU-T/asn1/","http://www.asn1.org/"],"cveids":["CVE-2003-0818"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2004-02-10T19:35:44Z","publicdate":"2004-02-10T00:00:00Z","datefirstpublished":"2004-02-10T20:41:00Z","dateupdated":"2004-02-10T20:50:43Z","revision":10,"vrda_d1_directreport":"","vrda_d1_population":"","vrda_d1_impact":"","cam_widelyknown":"15","cam_exploitation":"0","cam_internetinfrastructure":"16","cam_population":"15","cam_impact":"17","cam_easeofexploitation":"11","cam_attackeraccessrequired":"17","cam_scorecurrent":"27.71690625","cam_scorecurrentwidelyknown":"32.187375","cam_scorecurrentwidelyknownexploited":"50.06925","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":27.71690625,"vulnote":null}