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No Tavis, you're not the first person to pwn notepad with a nice memory corruption BUT you're probably the first one to report it to MS 😉 In a tweet responding to Ormandy he wrote: “No Tavis, you’re not the first person to pwn notepad with a nice memory corruption BUT you’re probably the first one to report it to MS -)” The term “popping a shell” is shorthand for describing an attack where the adversary exploits a computer and gain remote access via a shell connection.Ĭhaouki Bekrar, founder of Zerodium, a company that buys zero-day vulnerabilities, chimed in via Twitter saying that the Notepad application has been exploited in the past, just not publicly. “That’s not to say that given the little amount of what Notepad does there isn’t room for something to go wrong.”įor many researchers, “popping a shell” via the Notepad application is not something yet publicly documented. “Notepad is exposing so little of an attack surface it’s notable that it is still enough to give an attacker the ability to run arbitrary code,” Kaminsky said.

It’s impressive to get this attack to work at all, said Dan Kaminsky, chief scientist and founder at White Ops. That’s all I can share,” he wrote in a tweet dialogue on Friday.

“All I can say it’s a serious security bug, and we’ve given Microsoft up to 90 days to address it (as we do with all the vulns we report). The researcher said more details of the bug would be revealed in 90 days, as part of Google’s Project Zero’s disclosure policy, or after Microsoft patches the bug. I said ‘it’s a real bug’ 😆 It took me all weekend to find good CFG (Control Flow Guard) gadgets, just showing off.” Surprising number of people replied thinking I was just right clicking stuff….

He followed with, “This is a real memory corruption exploit, I’ve reported it to MSRC (Microsoft Security Response Center). “Am I the first person to pop a shell in notepad?” Ormandy asked in a tweet. In a tweet he indicated that the bug was tied to a memory corruption flaw in Notepad, a basic text editor that has shipped on all versions of Windows since 1985. The bug was found by Tavis Ormandy, a bug hunter with Google’s Project Zero team. A memory corruption bug in the Microsoft’s Windows Notepad application can be used to open remote shell access – typically a first step for attackers infiltrating a system.