How Bad is WMF

There has been a flood of information about the WMF vulnerability and associated exploits. We plan to record a special 10-15 minute podcast episode dedicated to WMF tonight. Right now, here are some facts to present to management and help further assess the situation:

  • According to ISC, there was a trojan being installed via WMF that hit a web page to increment a counter. Last count, 200,000.
  • The latest SANS polls indicate that organizations are in fact seeing attacks that use the WMF vulnerability
  • F-Secure has found evidence of attackers using the flaw to infect machines and tell them to send SPAM. The link in the SPAM message contains a WMF exploit that installs a bot, instructing the computer to partake in a botnet. More information here.
  • WebSense has released an alert which shows you what some of the WMF images look like on varius web sites. They state that there are two types of attacks, one where users are lured to an evil web site, and one where an attacker compromises an existing web site and slip in a WMF image with exploit code.


Paul Asadoorian

Paul Asadoorian is currently the Principal Security Evangelist for Eclypsium, focused on firmware and supply chain security awareness. Paul’s passion for firmware security extends back many years to the WRT54G hacking days and reverse engineering firmware on IoT devices for fun. Paul and his long-time podcast co-host Larry Pesce co-authored the book “WRTG54G Ultimate Hacking” in 2007, which fueled the firmware hacking fire even more. Paul has worked in technology and information security for over 20 years, holding various security and engineering roles in a lottery company, university, ISP, independent penetration tester, and security product companies such as Tenable. In 2005 Paul founded Security Weekly, a weekly podcast dedicated to hacking and information security. In 2020 Security Weekly was acquired by the Cyberrisk Alliance. Paul is still the host of one of the longest-running security podcasts, Paul’s Security Weekly, he enjoys coding in Python & telling everyone he uses Linux.

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