Cumulative Security Update for Internet Explorer (MS13-080)

ITS Advisory Number: 
2013-094b
Date(s) Issued: 
Tuesday, October 8, 2013
Date Updated: 
Wednesday, October 16, 2013
Subject: 
Cumulative Security Update for Internet Explorer (MS13-080)
Overview: 

Multiple vulnerabilities have been discovered in Microsofts web browser, Internet Explorer, which could result in remote code execution. If a user views a specially crafted website using Internet Explorer, an attacker could gain the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

OCTOBER 16, 2013 - UPDATED OVERVIEW:
MS13-080, a cumulative update for Internet Explorer, has been updated by Microsoft. Ten vulnerabilities were previously listed, but now only nine are identified. The vulnerability removed from the cumulative update is CVE-2013-3871, and was described in the original bulletin as a memory corruption vulnerability. CVE-2013-3871 is scheduled to be addressed in a future security update.

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Systems Affected: 
  • Internet Explorer 11
  • Internet Explorer 10
  • Internet Explorer 9
  • Internet Explorer 8
  • Internet Explorer 7
  • Internet Explorer 6
RISK
GOVERNMENT
Large and medium government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
High
Description: 

ORIGINAL DESCRIPTION:ÿ
Nine Ten vulnerabilities have been discovered in Microsofts web browser, Internet Explorer, which could result in remote code execution. These vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. One vulnerability that is currently the subject of targeted attacks is a user-after-free vulnerability in CDisplayPointer triggered with the "onpropertychange" event handler. The exploit code for this issue uses heap-spray to allocate a small ROP chain around address 0x14141414 and is designed to target only IE8 running on Windows XP for Korean and Japanese language-based users using a JavaScript code.

An attacker who successfully exploits any of these vulnerabilities could gain the same user rights as the current user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

UPDATED DESCRIPTION - October 16, 2013
Ten vulnerabilities were previously listed under MS13-080. Now the listing only shows nine. The vulnerability that was removed is CVE-2013-3871, a memory corruption vulnerability. Microsoft has taken this particular vulnerability out of MS13-080 and will address it in a future patch.

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Actions: 
  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
References: 
Microsoft:
https://technet.microsoft.com/en-us/security/bulletin/ms13-080
CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3871
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3872
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3873
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3874
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3875
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3882
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3885
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3886
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3893
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3897
OCTOBER 16 UPDATED REFERENCE
https://technet.microsoft.com/en-us/security/bulletin/ms13-080