ID: IRCNE2015012407
Date: 2015-01-26
According to “ComputerWorld”, Attackers are using compromised websites to exploit a new and currently unpatched vulnerability in Flash Player, a malware researcher has reported.
The new exploit was observed in drive-by-download attacks launched with an exploit kit called Angler, according to an independent researcher who uses the online alias Kafeine.
Exploit kits are malicious Web applications that contain exploits for vulnerabilities in browsers and browser plug-ins such as Java, Flash Player, Adobe Reader and Silverlight. Attackers silently redirect users' browsers to exploit kit installations by inserting rogue code in compromised websites and malicious advertisements.
The kits choose which exploits to load from their arsenal depending on the visitor's browser and installed plug-ins. If successful, the exploits install malware. It's known as a drive-by-download attack and is typically transparent to users.
Exploit kits usually target known vulnerabilities, which is why it's important to keep browser plug-ins like Flash Player up to date. But that doesn't help if attackers have an exploit for a zero-day vulnerability -- one that's not been patched yet by the software vendor.
Zero-day exploits are valuable to hackers, which is why they're more commonly used in targeted attacks where the stakes are higher and the goal is usually cyberespionage. It's unusual to see them in mass attacks like those performed with Angler and other exploit kits.
The new zero-day exploit used in Angler worked successfully on the latest Flash Player version on Windows 7 with Internet Explorer 8, Windows 8 with Internet Explorer 10, and Windows XP with IE 6 to 9, Kafeine said in a blog post. Disabling Flash Player for some days might be a good idea, he said.
Adobe is aware of the report and investigating the claims, a spokeswoman said via email. However, Kafeine claims he shared the exploit with the company, and that Adobe has confirmed it.
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