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Microsoft Vector Graphics Rendering bibliotek buffer overflow Advisory Available in English 

Secunia Advisory: SA21989  
Udsendt: 2006-09-19
Sidste Opdt.: 2006-09-26

Kritisk:
Ekstremt kritisk
Betydning: Systemadgang
Hvor: Fra Internet
Løsning Status: Producent Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional


CVE reference:CVE-2006-4868 (Secunia mirror)

Want to know the next time vulnerabilities are fixed in this product?
- Companies can be alerted via email and SMS!


Beskrivelse:
Der er fundet en sårbarhed i Microsoft Windows, som kan udnyttes af ondsindede personer til at kompromittere en brugers system.

Sårbarheden skyldes en ikke-kontrolleret buffer i Microsoft Vector Graphics Rendering(VML) biblioteket (vgx.dll) under håndteringen af bestemt indhold i VML-dokumenter (Vector Markup Language). Dette kan udnyttes til at forårsage et stack-baseret buffer overflow ved f.eks. at lokke en bruger til at se et ondsindet VML-dokument indeholdende en meget lang "fill" metode i et "rect" tag med Internet Explorer.

Succesfuld udnyttelse muliggør eksekvering af vilkårlig kode med rettigheder, som den applikation, der benytter den sårbare funktionalitet i biblioteket.

NOTE: Sårbarheden udnyttes aktivt på nuværende tidspunkt.

Sårbarheden er bekræftet på et fuldt opdateret Microsoft Windows XP SP2 system, men andre kan også være berørte.

Ifølge Microsoft er der også andre uspecificerede sårbarheder.

Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.

Løsning:
Installer patches.

Windows XP SP1:
http://www.microsoft.com/downloads/de...=383C13DC-51A9-4B12-89E3-871A1A3DE98F

Windows XP SP2:
http://www.microsoft.com/downloads/de...=B5F19858-4E86-4FD4-A264-E4823FF6D0A9

Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=AFD3279C-6171-4F20-A36E-B9B56EE4C7F1

Windows Server 2003 (eventuelt med SP1):
http://www.microsoft.com/downloads/de...=AF8F3A58-BA7A-41BF-BB1B-3A9DDFDC3E27

Windows Server 2003 for Itanium-baserede systemer (eventuelt med SP1):
http://www.microsoft.com/downloads/de...=271E9C78-1C6A-443E-924D-43FD6D51E643

Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=E2CB474F-FC1B-4B7D-A607-02A1528C6743

Internet Explorer 5.01 SP4 på Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=4C48FF93-6559-4616-9C2D-406E808B7E97

Internet Explorer 6 SP1 på Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=EA7DE30F-D765-4E5B-BFD4-64F3FED578FF

Rapporteret af / Kredit:
Fundet som en såkaldt 0-day.

Sample-exploit leveret af Sunbelt Software.

Forløb:
19-09-2006: Opdaterede advisory med yderligere information.
20-09-2006: Tilføjede CVE-reference.
25-09-2006: Opdaterede løsningen.
26-09-2006: Tilføjede yderligere information fra Microsoft. Opdaterede løsningen.

Original Advisory:
MS06-055 (KB925486):
http://www.microsoft.com/technet/security/Bulletin/MS06-055.mspx

Microsoft:
http://www.microsoft.com/technet/security/advisory/925568.mspx

Andre Kilder:
US-CERT VU#416092:
http://www.kb.cert.org/vuls/id/416092



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

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