A working exploit that takes advantage of a previously unknown critical security hole in Internet Explorer has been published online. Experts say the vulnerability is being actively exploited in the wild, and that it appears to be connected to the same group of Chinese hackers responsible for unleashing a pair of Java zero-day exploits late last month.
Researchers at security vulnerability testing firm Rapid7 have added a new module to the company?s free Metasploit framework that allows users to successfully attack the vulnerability on Internet Explorer versions 7, 8 and 9 on Windows XP, Vista and 7.
?Computers can get compromised simply by visiting a malicious website, which gives the attacker the same privileges as the current user,? Rapid7 researcher ?sinn3r? wrote on the firm?s blog. ?Since Microsoft has not released a patch for this vulnerability yet, Internet users are strongly advised to switch to other browsers, such as Chrome or Firefox, until a security update becomes available. The exploit had already been used by malicious attackers in the wild before it was published in Metasploit. The associated vulnerability puts about 41% of Internet users in North America and 32% world-wide at risk.?
News of the IE exploit surfaced at the blog of security researcher and blogger Eric Romang, who said he discovered the attack code while examining a Web server recently used by Chinese hackers to launch targeted attacks via zero-day Java vulnerabilities that were patched by Oracle last month. Romang and other experts have connected the sites serving those Java exploits to the Nitro attacks of 2011, espionage attacks directed against at least 48 chemical and defense companies.
I pinged Microsoft for a comment but have not yet heard back from them. I suspect they are preparing an advisory about this threat, and will update this post when I receive a response. Until an official fix is available, IE users would be wise to surf with another browser.
Tags: 0day, Eric Romang, ie, Internet Explorer zero-day, java, Metasploit, microsoft, Oracle, Rapid7, zero day
Source: http://krebsonsecurity.com/2012/09/exploit-released-for-zero-day-in-internet-explorer/
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