11–20 of 116 posts
> the last time I interacted with MSRC regarding reporting a VSCode bug, it was a horrible experience where they silently fixed the bug Classic MSRC. It has figured out that researchers will report for free regardless. Why change?
> the last time I interacted with MSRC regarding reporting a VSCode bug, it was a horrible experience where they silently fixed the bug Classic MSRC. It has figured out that researchers will report for free regardless. Why change?
It was the status quo for a long time, then the pesky security researchers started asking for compensation instead of clout.
I'm catching up on the infosec twitter side but it seems like it was even worse. A lot of people have the same story as me in 2023 of "they silently patch the bug and don't even credit you" which really stinks.
This is a very good writeup. Zooming way out (perhaps to the point of useless observation), it's a pity that the web embedded VSCode editor is signed into GitHub at all . Defense-in-depth or not, a huge vulnerability surface arises from that original sin. It'd be like if you had a god-permissioned GitHub API token stored in world-readable plaintext on your workstation for the malicious-NPM-package-of-the-week to find…
If the malicious-npm-package-of-the-week is reading arbitrary files on your workstation, isn't it usually able to run git clone/push/whatever with your current credentials anyway?
But then someone else on the team should have to manually approve that MR to allow it to be merged to main.
This kind of defeats the ability of malware to push stuff out automatically.
Earlier quoted context omitted.
It was the status quo for a long time, then the pesky security researchers started asking for compensation instead of clout.
> instead of clout I'm catching up on the infosec twitter side but it seems like it was even worse. A lot of people have the same story as me in 2023 of "they silently patch the bug and don't even credit you" which really stinks.
I hope you get credit where credit is due in future endeavors.
> the last time I interacted with MSRC regarding reporting a VSCode bug, it was a horrible experience where they silently fixed the bug Classic MSRC. It has figured out that researchers will report for free regardless. Why change?
It was the status quo for a long time, then the pesky security researchers started asking for compensation instead of clout.
This is a very good writeup. Zooming way out (perhaps to the point of useless observation), it's a pity that the web embedded VSCode editor is signed into GitHub at all . Defense-in-depth or not, a huge vulnerability surface arises from that original sin. It'd be like if you had a god-permissioned GitHub API token stored in world-readable plaintext on your workstation for the malicious-NPM-package-of-the-week to find…
How about pull from the repo but only push to a staging area from which the user, but not the token, can push for real?
Frankly, LLM agents should do this too. Letting your LLM push seems foolhardy to me.
If you like VSCode but don't like Microsoft, try Zed (zed.dev).
Thank you for essentially donating the time you spent on this exploit to raise awareness on improving VS Code's security response. You could have just given up on them but you're still trying to help.
I have no interest in selling these vulnerabilities or sitting on them. At the same time, it feels really bad to have a vendor disrespect the hours it can take to make a proof-of-concept by just patching it silently and not crediting you or acknowledging it.
The author said:
You cannot just use the shortcut trick to install the evil extension directly because of new publisher trust system;
You can bypass this by using local workspace extensions which has no publisher screening, but CSP blocks it;
The solution seems to be that installing a local workspace extension which binds a shortcut of 'install extension without checking publisher'.
So I assume it means:
1. you need two extensions, 1st one is local and only for the keybinding, and 2nd one is the 'real' evil one and it doesn't need to (actually can't, because of CSP) be local anymore?
2. the CSP only prevents the JS in local extension but nothing about its package.json (or the ability to add shortcuts), right?
> the last time I interacted with MSRC regarding reporting a VSCode bug, it was a horrible experience where they silently fixed the bug Classic MSRC. It has figured out that researchers will report for free regardless. Why change?
I don’t know the specifics of this case, but I’ve managed bug bounty programs in the past through Bountysource and HackerOne. One thing that occasionally happens is that a report makes its way to the development team before the security team has fully assessed it, in this case MSRC.
At that point, a developer may decide to quietly fix the issue. Sometimes that’s driven by a concern, rational or not, that being associated with a security bug could reflect poorly on them or affect future promotion opportunities. The result is that by the time the security team attempts to reproduce the report, the vulnerability is already gone.
From MSRC’s perspective, all they see is that the provided reproduction steps no longer work. They have no visibility into the internal history of the bug or whether someone already patched it. As a result, the report gets closed as invalid even though the original finding may have been legitimate.