A malware infection, based on known flaws, has hit millions of e-commerce Web pages in the past two weeks
A malware infection initially reported last month has continued to spread across e-commerce Websites and now affects more than six million Web pages, according to security firm Armorize.
The attack has spread rapidly despite the fact that it exploits flaws that were patched last autumn, according to the firm.
The malware, called Willysy, exploits bugs in an e-commerce platform called osCommerce that were patched in version 2.3 of the software, released last November. The current version is 3.0.1. The open source osCommerce platform claims to have about 250,000 users, including small and medium-sized businesses and developers.
As of 3 August the malware affected about 6.3 million individual Web pages, Armorize said in an advisory. When the firm initially identified Willysy, on 24 July, it affected 90,000 pages.
When visitors arrive at an infected page the malware targets vulnerabilities in Java, Adobe Reader, Windows Help Centre and Internet Explorer, according to Armorize. These flaws, too, are known and have been patched.
In 2009 security firm ScanSafe reported a campaign in which more than 57,000 legitimate Websites were infected to load malware on visitors’ computers and steal their passwords. That attack also used a malicious iFrame via SQL injection.
The iFrame in turn loaded what ScanSafe Senior Security Researcher Mary Landesman described as a “potent Trojan cocktail consisting of backdoors, password stealers, and downloader” on the compromised Web pages.
Last year VeriSign created an online security clinic for smaller businesses designed to help them deal with security threats and build customer trust and confidence online.