INSIGHTS, NEWS & DISCOVERIES
FROM IOACTIVE RESEARCHERS

Wednesday, June 28, 2017

WannaCry vs. Petya: Keys to Ransomware Effectiveness

By Daniel Miessler
With WannaCry and now Petya we’re beginning to see how and why the new strain of ransomware worms are evolving and growing far more effective than previous versions.

Wednesday, June 14, 2017

APIs are 2FA Backdoors

By Daniel Miessler
Two-factor Authentication (2FA) today is something like having a firewall in the year 2000: if you say you have it, it basically stops any further questioning.

Unfortunately, when you have a powerful and mismanaged API, 2FA is about as effective as having a stateful firewall protecting a broken web application.

Friday, May 19, 2017

Post #WannaCry Reaction #127: Do I Need a Pen Test?

By Daniel Miessler
In the wake of WannaCry and other recent events, everyone from the Department of Homeland Security to my grandmother are recommending penetration tests as a silver bullet to prevent falling victim to the next cyber attack. But a penetration test is not a silver bullet, nor is it universally what is needed for improving the security posture of an organization. There are several key factors to consider. So I thought it might be good to review the difference between a penetration test and a vulnerability assessment since this is a routine source of confusion in the market. In fact, I’d venture to say that while there is a lot of good that comes from a penetration test, what people actually more often need is a vulnerability assessment.

Tuesday, May 16, 2017

#WannaCry: Examining Weaponized Malware

By Brad Hegrat

Attribution: You Keep Using That Word, I Do Not Think It Means What You Think It Means...

In internal discussions in virtual halls of IOActive this morning, there were many talks about the collective industry’s rush to blame or attribution over the recent WanaCry/WannaCrypt ransomware breakouts. Twitter was lit up on #Wannacry and #WannaCrypt and even Microsoft got into the action, stating, We need governments to consider the damage to civilians that comes from hoarding these vulnerabilities and the use of these exploits.”

Opinions for blame and attribution spanned the entire spectrum of response, from the relatively sane…

Saturday, May 13, 2017

We’re gonna need a bigger boat....

By Brad Hegrat
A few weeks ago back in mid-March (2017), Microsoft issued a security bulletin (MS17-010) and patch for a vulnerability that was yet to be publicly disclosed or referenced. According to the bulletin, “the most severe of the vulnerabilities could allow remote code execution if an attacker sends specially crafted messages to a Microsoft Server Message Block 1.0 (SMBv1) server. This security update is rated Critical for all supported releases of Microsoft Windows.

Thursday, April 20, 2017

Linksys Smart Wi-Fi Vulnerabilities

By Tao Sauvage

Last year I acquired a Linksys Smart Wi-Fi router, more specifically the EA3500 Series. I chose Linksys (previously owned by Cisco and currently owned by Belkin) due to its popularity and I thought that it would be interesting to have a look at a router heavily marketed outside of Asia, hoping to have different results than with my previous research on the BHU Wi-Fi uRouter, which is only distributed in China.

Smart Wi-Fi is the latest family of Linksys routers and includes more than 20 different models that use the latest 802.11N and 802.11AC standards. Even though they can be remotely managed from the Internet using the Linksys Smart Wi-Fi free service, we focused our research on the router itself.

Tuesday, February 28, 2017

Hacking Robots Before Skynet

By Cesar Cerrudo (@cesarcer) and Lucas Apa (@lucasapa)

Robots are going mainstream in both private and public sectors - on military missions, performing surgery, building skyscrapers, assisting customers at stores, as healthcare attendants, as business assistants, and interacting closely with our families in a myriad of ways. Robots are already showing up in many of these roles today, and in the coming years they will become an ever more prominent part of our home and business lives. But similar to other new technologies, recent IOActive research has found robotic technologies to be highly insecure in a variety of ways that could pose serious threats to the people and organizations they operate in and around.

Wednesday, January 25, 2017

Harmful prefetch on Intel

By Enrique Nissim

We've seen a lot of articles and presentations that show how the prefetch instruction can be used to bypass modern OS kernel implementations of ASLR. Most of the public work however only focuses on getting base addresses of modules with the idea of building a ROP chain or maybe patching some pointer/value of the data section. This post represents an extension of previous work, as it documents the usage of prefetch to discover PTEs on Windows 10.