Live data from Hacker News

Mozilla fixes Firefox zero-day actively exploited in attacks

bleepingcomputer.com

21–30 of 151 posts

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#24

Seems bad. "An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild." See: - NVD page for CVE-2024-9680: https://nvd.nist.gov/vuln/detail/CVE-2024-9680 - Mozilla security advisory: https://www.mozilla.org/en-US/security/advisories/mfsa2024-5...

[deleted]

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#25

We need a browser written in managed lang Even if it means some perf drop, modern hardware will get it back in X years, but safety will be significantly improved

They already are partly in JS so there's a smooth path.

(Wasm isn't safe but could be a building block too)

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#26

We need a browser written in managed lang Even if it means some perf drop, modern hardware will get it back in X years, but safety will be significantly improved

Ladybird[1] is switching to Swift[2].

[1] https://ladybird.org

[2] https://news.ycombinator.com/item?id=41208836

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#27
post #25

We need a browser written in managed lang Even if it means some perf drop, modern hardware will get it back in X years, but safety will be significantly improved

They already are partly in JS so there's a smooth path. (Wasm isn't safe but could be a building block too)

I can't find the link right now but I seem to remember that Firefox already replaced some internal native subsystems with the same code compiled to WASM - or maybe even compiled to WASM and then translated back to C, which basically adds a runtime memory safety layer to unsafe C code at the cost of some performance (I think it was a couple of media codecs, but not sure).

Not sure why you think that WASM is less secure than JS though. Even if the WASM heap has internal corruption there's no way for this to do damage outside the WASM sandbox that wouldn't be possible in JS.

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#28

We need a browser written in managed lang Even if it means some perf drop, modern hardware will get it back in X years, but safety will be significantly improved

Rust was created at Mozilla and currently 11.7% of the Firefox source code is in Rust:

https://4e6.github.io/firefox-lang-stats/

That's down from 12.49% at the peak in July 2020 so I assume the conversion work was halted after the layoffs in 2020:

https://docs.google.com/spreadsheets/d/1flUGg6Ut4bjtyWdyH_9e...

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#29

We need a browser written in managed lang Even if it means some perf drop, modern hardware will get it back in X years, but safety will be significantly improved

Sounds like Mozilla should invent a low level language with great safety guarantees, maybe even call it after some form of oxidation process[1]. Then make a browser engine called after a motor[2], and then NOT axe the team responsible for it[3].

I think the last part might be crucial.

[1] https://www.rust-lang.org/

[2] https://servo.org/

[3] https://paulrouget.com/bye_mozilla.html

Re: Mozilla fixes Firefox zero-day actively exploited in attacks

#30

Fixed many months ago just being made public now, according to the bug tracker. Why a 7 month delay?

Why the need for patch releases then like 128.3.1?

128 is the current ESR: https://whattrainisitnow.com/calendar/
Post reply on HN