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Sandro Gauci

Sandro Gauci, Enable Security

Exploiting CVE-2022-0778, a bug in OpenSSL vis-à-vis WebRTC platforms

Executive summary (TL;DR) Exploiting CVE-2022-0778 in a WebRTC context requires that you get a few things right first. But once that is sorted, DoS (in RTC) is the new RCE! How I got social engineered into looking at CVE-2022-0778 A few days ago, Philipp Hancke, self-proclaimed purveyor of the dark side of WebRTC, messaged me privately with a very simple question: “are you offering a DTLS scanner by chance?” He explained how in the context of WebRTC it would be a bit difficult since you need to get signaling right, ICE (that dance with STUN and other funny things) and finally, you get to do your DTLS scans.…

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Sandro Gauci

Sandro Gauci, Enable Security

Killing bugs … one vulnerability report at a time

Executive summary (TL;DR) We tell the story behind the latest FreeSWITCH advisories and how it all came together one sleepless night in April 2021 so that we ended up with 4 vulnerabilities that needed reporting. And then, one more vulnerability found due to a bug in our own software, SIPVicious PRO. We explain how these flaws were discovered, reported, fixed and what we ultimately learned through this process. What is this about?…

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root@localhost

One presentation at ClueCon and five security advisories for FreeSWITCH

The FreeSWITCH team has just published version v1.10.7 which fixes a number of security issues that we reported. If you use FreeSWITCH, please do upgrade to get these security updates. To learn about the background work that went into getting these security bugs squashed, follow Sandro’s talk called Killing bugs … one vulnerability report at a time. This will be presented at at ClueCon on Thursday, October 28th. Here are the titles of each advisory and a very short summary:…

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