![]() ![]() We help others feel safe to speak their minds. We invest in our people by giving them opportunities to grow. We empower our users by focusing on value. Work is better if you enjoy what you’re doing. We believe curiosity is the engine of change. We approach hard topics with a sense of adventure. We are delighted by problems and solving them together. We listen well and seek to understand before reacting. Our bonds are strong enough to give and receive criticism. We openly share the good and the bad so we do the right thing. Myself, Gleb, and the rest of our executive team worked together to distill the fewest possible values that represented the team today. (Shout out to our advisor Joe Musselman of Broom Ventures, for helping us design this exercise).Īfter having every individual complete the exercise, we collated everyone’s results and also created a word cloud to help us pull out themes and common words. All 120 Nylanauts gathered in Las Vegas, and as a part of the programming, we had everyone do a personal mission, vision, and values exercise to clarify what mattered to them. In February, we ran our very first all-company annual kickoff at scale. It was time to come together again and revisit and re-cement who we were.Īnd so we did. ![]() We hired all over because of necessity, and then we went all in on full remote. Tech went up up and up… and then it went down. A global pandemic changed the world overnight and lasted for years. So much has happened in the last few years. Values codify what that group of people holds dear. And a growing company is always changing. Because that’s all a company is–a group of people working together to build something useful for others. They’re partly aspirational, but they also represent the essence of the people who make up a business. Writing down our values and company handbook helped cement who we were and created a foundation we grew from over the next half-decade. We were only about 15 people at the time. The first time we did this at Nylas was in 2017, after a big pivot away from our mail client Nylas Mail, when we needed to come together as a team, re-group, and re-strategize. But eventually, you need to put pen to paper and talk about what matters. When you first set out with a very small group of people, and if you have enough of a shared background–you can get away without writing too much down. I’d been lucky enough to find welcoming allies in my first job and wanted to carry that forward. ![]() As a queer woman in tech, that wasn’t something I could take for granted just anywhere. Where all sorts of people could do the best work of their lives. When I started Nylas in 2013, a part of my motivation was to create a company that felt like home. This vulnerability has been reported and fixed on version 2.0.32, which was released a few weeks ago.At Nylas, culture has been a big focus from the very beginning. The execution is much more slow, but it will be finally executed. If it isn’t we could use “.” instead of $HOME$PWD.nylas-mail. Since we cannot use "/" in our filename, we use the $PWN environment var which should be "/". With this name, we wait five seconds to ensure that pwn.pdf is downloaded, and then we try to find the file in order to execute it, because each attachment is downloaded in ~/.nylas-mail//attachment_name. Z$(sleep 5 for f in $(find $HOME$PWD.nylas-mail -name pwn.pdf) do sh $f done).pdf This file exploits the vulnerability and executes pwn.pdf. In the PoC video, this file contains the following content (just to open the calculator):įile 2. It is used to contain the code/commands we want to execute because we cannot use the file name in order to execute any code (it is just a shell script). The filename is very limited in order to exploit the vulnerability, so we can use multiple attachments in order to create a full exploit for this vulnerability. The "pathForFile" function uses the filename by using the function "safeDisplayName" ( ), which is not safe because it doesn’t escape correctly the filename in order to avoid shell command injection. As you can see, it comes from:Ĭonst filePath = this.pathForFile(file) // ( ) The problem is present in the "escapedPath" variable. Nylas downloads the attachment and use 'qlmanage' to create a preview of the file. This vulnerability can be found in the source code in the following line:, and as you can see, is related to the thumbails preview feature in macOS. The name of the attached file should be something like: The vulnerability allows to any malicious user to run any OS command in the victim's computer by sending a special file in the attachments. Today I am going to talk about a vulnerability I found on Nylas Mail ( ), an open source mail client. ![]()
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