Hacking ISP CPE equipment: FiberHome

Posted on 2023-12-18 in blog • Tagged with router, 0day, fiberhome, embedded, iot

For those of you who are used to reading about my Apple research, this post is going to be a change of pace. This one is about CPE (Customer Premise Equipment) security, basically the routers your ISP gives you.

Background

Last year I spent some time back in my home …


Continue reading

You can watch my OBTSv6 talk on youtube

Posted on 2023-12-18 in blog • Tagged with macOS, OBTS, talk

I forgot to post about my talk here, so here it is for those who missed my tweet:

Unexpected, Unreasonable, Unfixable: Filesystem Attacks on macOS by Gergely Kalman


sqlol (CVE-2023-32422) - a macOS TCC bypass

Posted on 2023-11-15 in blog • Tagged with macOS, ASB, tcc bypass, 0day

Wow, two blogposts in two days! Is this a new writeup schedule?

No, it's not. But, since I'm presently just ill enough to not be productive, yet well enough to write, I figured I'd chip away at my horrendous (writeup) debt while I wait for the immune fairy to arrive …


Continue reading

lateralus (CVE-2023-32407) - a macOS TCC bypass

Posted on 2023-11-14 in blog • Tagged with macOS, ASB, tcc bypass, 0day

Since I owe you guys a bunch of writeups from my talk ( Unexpected, Unreasonable, Unfixable: Filesystem Attacks on macOS), I decided that I'll tackle lateralus today.

It's a simple, clean bug with a quick and satisfying resolution. I have been bitching about Apple in the past blogpost (and on twitter …


Continue reading

batsignal (no CVE) - a macOS LPE

Posted on 2023-10-30 in blog • Tagged with macOS, ASB, LPE, 0day

UPDATE:

A couple hours after publication the Apple Security Changelogs were updated across the board, and they added me to CVE-2022-26704. I knew this was in the works, but it's still good to see. Thank you :)

This post is a writeup of batsignal, a macOS local privilege escalation bug from …


Continue reading

Unexpected, Unreasonable, Unfixable - My slides from OBTS v6

Posted on 2023-10-15 in blog • Tagged with macOS, ASB, 0day, OBTS, talks

For those that missed the OBTS v6 conference and live stream, here are the slides of my talk:

Gergely Kalman: Unexpected Unreasonable Unfixable

There should be a video of the talk coming out on the official OBTS youtube channel as well.

As for me, I will publish a writeup for …


Continue reading

librarian (CVE-2023-38571) - a macOS TCC bypass in Music and TV

Posted on 2023-09-27 in blog • Tagged with macOS, ASB, tcc bypass, 0day

This post is a writeup of CVE-2023-38571, a macOS TCC bypass bug I found. It was supposed to be unveiled in my upcoming talk:

"Unexpected, Unreasonable, Unfixable: Filesystem Attacks on macOS" at OBTS v6,

but I needed to cut some bugs out. This is another one of them.

Background

While …


Continue reading

unnamed sandbox escape (CVE-2023-32364) - a macOS sandbox escape by mounting

Posted on 2023-09-26 in blog • Tagged with macOS, ASB, sbx, 0day

This post is a writeup of CVE-2023-32364, a macOS application sandbox escape bug I found. It was supposed to be unveiled in my upcoming talk:

"Unexpected, Unreasonable, Unfixable: Filesystem Attacks on macOS" at OBTS v6,

but I needed to cut some bugs out. This is one of them.

macOS Sandboxing …


Continue reading