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  • IE8 zero-day exploit targets U.S. nuke researchers

IE8 zero-day exploit targets U.S. nuke researchers

Pierluigi Paganini May 06, 2013

Security experts have discovered a new IE8 zero-day vulnerability exploited to target U.S. Government experts working  on nuclear weapons research.

Security experts have discovered a new IE8 zero-day vulnerability exploited to target U.S. Government experts working  on nuclear weapons research, the concerning discovery has been confirmed by principal security firms that revealed that the flaw has been used in a series of “watering hole” attacks.

According first investigation the IE8 zero-day has been used to target various groups of research such as the components of U.S. Department of Labor and the U.S. Department of Energy.

“Watering Hole” is a technique of attack realized compromising legitimate websites with a “drive-by” exploit, in this way restricted  audience interested in the specific content proposed by targeted website could be attacked, when an internet user visits the page a backdoor trojan is installed on his computer.

The success of the method of attack depends on the capabilities of attacker to develop/produce zero-day exploits that affect victim’s software, watering Hole is not new ,it has been detected for first time in 2009 when civil society organizations were compromised with this technique and used as a vector to deliver 0-day exploits.

The website compromised to exploit the IE8 zero-day is the Dept. of Energy’s Site Exposure Matrices (SEM) website, the site deals with “nuclear-related illnesses” linked to Dept. of Energy facilities of employees who are experiencing health problems as a result of their professional activities.

Once again the hackers behind the exploits of IE8 zero-day flaw seems to have Chinese origin, Invincea security firm revealed that the Dept. of Labor website was hacked by attackers to hijack visitors to a compromised website to deploy Poison Ivy Trojan through the execution of a “drive-by download exploit”, the malware is known to be linked to the China based group of hackers “DeepPanda”.

 

IE8 zero-day exploit

 

According security specialist a similar exploit has been already used early 2012, the new  IE8 zero-day exploit, according to security firm FireEye despite it searches for XP users it is also able to work against IE8 on Windows 7″ machines.

“This particular exploit checks for OS version, and only runs on Windows XP. We are able to reproduce the code execution and confirm it’s a working zero-day exploit against IE8. During our research we also found the exploit constructs a ROP chain on non-ASLRed msvcrt.dll, and we verified it could also work against IE8 on Windows 7. So we believe there should be some other exploits targeting IE8 on Windows 7.” FireEye post states.

At the moment is not clear the real entity of the attacks and there is no info in the information stolen, it must be anyway considered that those departments are considered strategic for cyber espionage activity due the numerous classified documents managed.

Microsoft issued a security advisory on Friday announcing its investigation on the event and confirming it as a “remote code execution vulnerability.”, Microsoft confirmed on Friday that the IE8 zero-day vulnerability exists in Internet Explorer 8 for all versions of Windows XP and above are affected, including Windows Server 2003, 2008 and R2.

Microsoft noted that IE6 users on Windows XP, IE7, IE9, and IE10 users on Windows 8 and Surface tablets, are not affected by the security flaw.

Other precious suggestions provided by the advisory are:

Mitigating Factors:

  • By default, Internet Explorer on Windows Server 2003, Windows Server 2008, and Windows Server 2008 R2 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this vulnerability.
  • By default, all supported versions of Microsoft Outlook, Microsoft Outlook Express, and Windows Mail open HTML email messages in the Restricted sites zone. The Restricted sites zone, which disables script and ActiveX controls, helps reduce the risk of an attacker being able to use this vulnerability to execute malicious code. If a user clicks a link in an email message, the user could still be vulnerable to exploitation of this vulnerability through the web-based attack scenario.
  • An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. 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.
  • In a web-based attack scenario, an attacker could host a website that contains a webpage that is used to exploit this vulnerability. In addition, compromised websites and websites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker’s website.

Pierluigi Paganini

(Security Affairs – Cyber espionage)

UPDADE

Microsoft has release the patch for the vulnerability

http://www.net-security.org/secworld.php?id=14886

 


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0-day exploits cyber espionage Department of Labor drive-by download IE8 zero-day malware Poison Ivy Trojan watering hole

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