[Sec-cert] [MS] Schwachstellen im Internet Explorer - MS10-02

WiN Site Security Contacts win-sec-ssc at lists.dfn-cert.de
Fr Jan 22 12:41:08 CET 2010


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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgende Warnung des Microsoft Product Security
Notification Service. Wir geben diese Informationen unveraendert an Sie
weiter.

CVE-2010-0027 - Schwachstelle im Internet Explorer bei der Bearbeitung
von URLs

  Im Internet Explorer existiert eine Schwachstelle im Internet Explorer
  bei der Bearbeitung von URLs. Dieser kann dazu fuehren, dass beim
  Validieren der URL ein Programm auf dem lokalen System unbeabsichtigt
  gestartet wird.

CVE-2010-0249 - Use After Free Schwachstelle im Internet Explorer

  Im Internet Explorer befindet sich eine Schwachstelle im Zusammenhang
  mit dem Zugriff auf ein bereits geloeschtes Objekt (Use After Free).
  Entfernte Angreifer koennen diese Schwachstelle dazu ausnutzen,
  beliebigen Code mit den Rechten des Benutzers auszufuehren.
  
  Die Schwachstelle wird bereits aktiv ausgenutzt. Ein Exploit ist
  bereits veroeffentlicht worden. 

CVE-2010-0248 / CVE-2010-0247 / CVE-2010-0246 / CVE-2010-0245 /
CVE-2010-0244 - Schwachstellen beim Zugriff auf Objekte im Internet
Explorer

  Im Internet Explorer befinden sich mehrere Schwachstellen im
  Zusammenhang mit dem Zugriff auf Javascript Objekte. Die Fehler liegen
  darin, dass auf Speicherstrukturen der Objekte zugegriffen wird, die
  bereits freigegeben wurden (Use After Free). Entfernte Angreifer
  koennen diese Schwachstellen dazu ausnutzen, beliebigen Code mit den
  Rechten des Benutzers auszufuehren.

CVE-2009-4074 - Schwachstelle im Cross-Site-Scripting Schutz im Internet
Explorer 8

  Der Internet Explorer 8 beinhaltet einen Schutzmechanismus vor
  Cross-Site-Scripting Angriffen. Im Fall eines Angriffs wird die
  Antwort des Servers so manipuliert, dass der vermeintlich injizierte
  Code unwirksam ist. Aufgrund eines Fehlers kann allerdings dieser
  Schutz vom Angreifer umgangen werden. Dabei sind auch Seiten
  betroffen, die keine Cross-Site-Scripting Schwachstellen beinhalten.
  Ein entfernter Angreifer kann diese Schwachstelle fuer
  Cross-Site-Scripting Angriffe ausnutzen. Allerdings muss der Angreifer
  die die Inhalte des Servers zumindest teilweise beeinflussen koennen.

Betroffen sind die folgenden Software Pakete und Plattformen:

  Internet Explorer 5.01
  Internet Explorer 6
  Internet Explorer 7
  Internet Explorer 8

  Windows XP
  Windows Server 2003
  Windows Vista
  Windows Server 2008
  Windows 7

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

Hersteller Advisory:
  http://www.microsoft.com/technet/security/bulletin/ms10-002.mspx


(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.

Mit freundlichen Gruessen,
		Klaus Moeller, DFN-CERT

- -- 
Dipl. Inform. Klaus Moeller (Incident Response Team)
Phone: +49 40 808077-555, Fax: +49 40 808077-556

DFN-CERT Services GmbH, https://www.dfn-cert.de,  Phone  +49 40 808077-555
Sitz / Register: Hamburg, AG Hamburg, HRB 88805,  Ust-IdNr.:  DE 232129737
Sachsenstrase 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski

17. DFN Workshop    "Sicherheit in vernetzten Systemen"    09./10.02.2010
Informationen unter https://www.dfn-cert.de/veranstaltungen/workshop.html

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.0072
             Cumulative Security Update for Internet Explorer
                              22 January 2010

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Internet Explorer
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Cross-site Scripting            -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-0249 CVE-2010-0248 CVE-2010-0247
                   CVE-2010-0246 CVE-2010-0245 CVE-2010-0244
                   CVE-2010-0027 CVE-2009-4074 

Reference:         ASB-2010.0022
                   ESB-2010.0044

Original Bulletin: 
   http://www.microsoft.com/technet/security/bulletin/ms10-002.mspx

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Microsoft Security Bulletin MS10-002 - Critical

Cumulative Security Update for Internet Explorer (978207)

   Version: 1.0

General Information

Executive Summary

This security update resolves seven privately reported vulnerabilities and 
one publicly disclosed vulnerability in Internet Explorer. The more severe 
vulnerabilities could allow remote code execution if a user views a 
specially crafted Web page using Internet Explorer. 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 all supported releases of Internet 
Explorer: Internet Explorer 5.01, Internet Explorer 6, Internet Explorer 6 
Service Pack 1, Internet Explorer 7, and Internet Explorer 8 (except Internet 
Explorer 6 for supported editions of Windows Server 2003). For Internet 
Explorer 6 for supported editions of Windows Server 2003 as listed, this 
update is rated Moderate. For more information, see the subsection, Affected 
and Non-Affected Software, in this section.

The security update addresses these vulnerabilities by modifying the way that 
Internet Explorer handles objects in memory, validates input parameters, and 
filters HTML attributes. 

Recommendation. The majority of customers have automatic updating enabled and 
will not need to take any action because this security update will be 
downloaded and installed automatically. Customers who have not enabled 
automatic updating need to check for updates and install this update manually. 

Affected Software

Internet Explorer 5.01 Service Pack 4
Internet Explorer 6
Internet Explorer 6 Service Pack 1
Internet Explorer 7
Internet Explorer 8

Vulnerability Information

XSS Filter Script Handling Vulnerability - CVE-2009-4074

An XSS filter bypass vulnerability exists in the way that Internet Explorer 8 
disables an HTML attribute in otherwise appropriately filtered HTTP response 
data. The vulnerability could allow initially disabled scripts to run in the 
wrong security context, leading to information disclosure.

URL Validation Vulnerability - CVE-2010-0027

A remote code execution vulnerability exists in the way that Internet Explorer 
incorrectly validates input. An attacker could exploit the vulnerability by 
constructing a specially crafted URL. When a user clicks the URL, the 
vulnerability could allow remote code execution. An attacker who successfully 
exploited this vulnerability could gain the same user rights as the logged-on 
user. If a user is logged on with administrative user rights, an attacker who 
successfully exploited this vulnerability could take complete control of an 
affected system. An attacker could then install programs; view, change, or 
delete data; or create new accounts with full user rights.

Uninitialized Memory Corruption Vulnerability - CVE-2010-0244

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. 
An attacker could exploit the vulnerability by constructing a specially crafted 
Web page. When a user views the Web page, the vulnerability could allow remote 
code execution. An attacker who successfully exploited this vulnerability could 
gain the same user rights as the logged-on user. If a user is logged on with 
administrative user rights, an attacker who successfully exploited this 
vulnerability could take complete control of an affected system. An attacker 
could then install programs; view, change, or delete data; or create new 
accounts with full user rights.

Uninitialized Memory Corruption Vulnerability - CVE-2010-0245

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. 
An attacker could exploit the vulnerability by constructing a specially crafted 
Web page. When a user views the Web page, the vulnerability could allow remote 
code execution. An attacker who successfully exploited this vulnerability could 
gain the same user rights as the logged-on user. If a user is logged on with 
administrative user rights, an attacker who successfully exploited this 
vulnerability could take complete control of an affected system. An attacker 
could then install programs; view, change, or delete data; or create new 
accounts with full user rights.

Uninitialized Memory Corruption Vulnerability - CVE-2010-0246

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. 
An attacker could exploit the vulnerability by constructing a specially crafted 
Web page. When a user views the Web page, the vulnerability could allow remote 
code execution. An attacker who successfully exploited this vulnerability could 
gain the same user rights as the logged-on user. If a user is logged on with 
administrative user rights, an attacker who successfully exploited this 
vulnerability could take complete control of an affected system. An attacker 
could then install programs; view, change, or delete data; or create new 
accounts with full user rights.

Uninitialized Memory Corruption Vulnerability - CVE-2010-0247

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. 
An attacker could exploit the vulnerability by constructing a specially crafted 
Web page. When a user views the Web page, the vulnerability could allow remote 
code execution. An attacker who successfully exploited this vulnerability could 
gain the same user rights as the logged-on user. If a user is logged on with 
administrative user rights, an attacker who successfully exploited this 
vulnerability could take complete control of an affected system. An attacker 
could then install programs; view, change, or delete data; or create new 
accounts with full user rights.
	
HTML Object Memory Corruption Vulnerability - CVE-2010-0248

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. 
An attacker could exploit the vulnerability by constructing a specially crafted 
Web page. When a user views the Web page, the vulnerability could allow remote 
code execution. An attacker who successfully exploited this vulnerability could 
gain the same user rights as the logged-on user. If a user is logged on with 
administrative user rights, an attacker who successfully exploited this 
vulnerability could take complete control of an affected system. An attacker 
could then install programs; view, change, or delete data; or create new 
accounts with full user rights.

	
HTML Object Memory Corruption Vulnerability - CVE-2010-0249

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. 
An attacker could exploit the vulnerability by constructing a specially crafted 
Web page. When a user views the Web page, the vulnerability could allow remote 
code execution. An attacker who successfully exploited this vulnerability could 
gain the same user rights as the logged-on user. If a user is logged on with 
administrative user rights, an attacker who successfully exploited this 
vulnerability could take complete control of an affected system. An attacker 
could then install programs; view, change, or delete data; or create new 
accounts with full user rights.

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