Executive Summary

Summary
Title Malicious Activity Associated with "Aurora" Internet Explorer Exploit
Informations
Name TA10-055A First vendor Publication 2010-02-24
Vendor US-CERT Last vendor Modification 2010-02-24
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Malicious activity detected in mid-December targeted at least 20
organizations representing multiple industries including chemical, finance, information technology, and media. Investigation into this activity revealed that third parties routinely accessed the personal email accounts of dozens of users based in the United States, China, and Europe. Further analysis revealed these users were victims of previous phishing scams through which threat actors successfully gained access to their email accounts.

I. Description

Through analysis of the malware used in this incident, McAfee discovered one of the malware samples exploited a vulnerability in Microsoft Internet Explorer (IE). The vulnerability exists as an invalid pointer reference within IE and, if successfully exploited, allows for remote code execution.

Microsoft has released Security Bulletin MS10-002, which provides updates for Internet Explorer that address this and other vulnerabilities.

US-CERT is providing technical indicators that can be incorporated into an organizations security posture to detect and mitigate any malicious activity.

Please see
for further detail.

The following signatures can be deployed to assist in detecting
malicious activity associated with this incident:

Primary Malware Beacon

alert tcp any any -> any any (msg:"Targeted Malware Communication Beacon Detected"; flow:to_server,established; dsize:20;
content:"|ff ff ff ff ff ff 00 00 fe ff ff ff ff ff ff ff ff ff 88
ff|"; depth:20; sid:7777777; rev:1;)

Secondary Malware Beacon

alert tcp any any <> any any (msg:"ORC:DIS:BEACON_380DFF";
content:"|38 0d ff 0a d7 ee 9d d7 ec 59 13 56|"; sid:99980060;
rev:1;)

Note: US-CERT has not verified or tested these signatures and recommends proper testing prior to deployment.

II. Impact

By convincing a user to view a specially crafted HTML document or Microsoft Office document, an attacker may be able to execute arbitrary code with the privileges of the user.

III. Solution

The Internet Explorer vulnerability used in these attacks is addressed with the updates provided in Microsoft Security Bulletin MS10-002.

Other recommendations include:

* As a best practice, limit end-user permissions on systems by granting minimal administrative rights.
* Enable Data Execution Prevention (DEP) for IE 6 Service Pack 2 or IE 7. IE 8 automatically enables DEP.
* Inspect network traffic history for communication with external systems associated with the attack.
* Examine computers for specific files or file attributes related to the attack.

Original Source

Url : http://www.us-cert.gov/cas/techalerts/TA10-055A.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-399 Resource Management Errors

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:6835
 
Oval ID: oval:org.mitre.oval:def:6835
Title: HTML Object Memory Corruption Vulnerability (CVE-2010-0249)
Description: Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka "HTML Object Memory Corruption Vulnerability."
Family: windows Class: vulnerability
Reference(s): CVE-2010-0249
Version: 13
Platform(s): Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Server 2003
Microsoft Windows Vista
Microsoft Windows Server 2008
Microsoft Windows Server 2008 R2
Microsoft Windows 7
Product(s): Microsoft Internet Explorer
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 4

SAINT Exploits

Description Link
Internet Explorer Eventparam use-after-free vulnerability More info here

ExploitDB Exploits

id Description
2010-01-17 Internet Explorer Aurora Exploit

OpenVAS Exploits

Date Description
2010-01-22 Name : Microsoft Internet Explorer Multiple Vulnerabilities (978207)
File : nvt/secpod_ms10-002.nasl
2010-01-20 Name : Microsoft Internet Explorer Remote Code Execution Vulnerability (979352)
File : nvt/gb_ms_ie_dep_remote_code_exec_vuln.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
61697 Microsoft IE mshtml.dll Use-After-Free Arbitrary Code Execution (Aurora)

Internet Explorer contains a flaw that may allow a context-dependent attacker to execute arbitrary code. The issue is triggered when a specially crafted website causes mshtml.dll to access memory that has been freed, allowing code execution.

Snort® IPS/IDS

Date Description
2016-04-05 Microsoft Internet Explorer invalid object access memory corruption attempt
RuleID : 37947 - Revision : 1 - Type : BROWSER-IE
2016-04-05 Microsoft Internet Explorer invalid object access memory corruption attempt
RuleID : 37946 - Revision : 1 - Type : BROWSER-IE
2016-04-05 Microsoft Internet Explorer deleted object access memory corruption attempt
RuleID : 37945 - Revision : 1 - Type : BROWSER-IE
2016-04-05 Microsoft Internet Explorer invalid object access memory corruption attempt
RuleID : 37944 - Revision : 1 - Type : BROWSER-IE
2014-01-10 Microsoft Internet Explorer invalid object access memory corruption attempt
RuleID : 19937 - Revision : 12 - Type : BROWSER-IE
2014-01-10 Microsoft Internet Explorer deleted object access memory corruption attempt
RuleID : 16369 - Revision : 14 - Type : BROWSER-IE
2014-01-10 Microsoft Internet Explorer invalid object access memory corruption attempt
RuleID : 16367 - Revision : 17 - Type : BROWSER-IE

Nessus® Vulnerability Scanner

Date Description
2009-01-21 Name : Arbitrary code can be executed on the remote host through a web browser.
File : smb_nt_ms10-002.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2013-05-11 00:53:47
  • Multiple Updates