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Actively exploited sandbox RCE in all Chromium versions

nvd.nist.gov

61–70 of 520 posts

Re: Actively exploited sandbox RCE in all Chromium versions

#61

Normalising running arbitrary code delivered over the internet (in the form of JavaScript and WASM), as a necessary condition for accessing most web pages may not have been one of the best decisions we have made.

In the future we can ask that your JaveScript and Wasm comes with a proof of being benign.

Re: Actively exploited sandbox RCE in all Chromium versions

#62
post #60
post #53

Earlier quoted context omitted.

In the past I would have thought this would incentivize finding bugs that might never be found. However it is now clear that all bugs that can be found will be found. So this makes a ton of sense.

> In the past I would have thought this would incentivize finding bugs that might never be found. Isn't that a good thing? > However it is now clear that all bugs that can be found will be found. So this makes a ton of sense. If Google can find all the bugs nowadays, presumably with AI, why still pay a bug bounty? At least by this logic, bug bounties make less sense now.

Sure they make sense — you need some incentive to drive the price to zero.

Re: Actively exploited sandbox RCE in all Chromium versions

#63
post #29

Let's take a moment to talk about the monetary value of this vulnerability. According to the Chrome release page ( https://chromereleases.googleblog.com/2026/09/stable-channel... ), Google paid a researcher $1000 for ethically reporting this. The CVE associated with it (CVE-2026-85046) is already being exploited in the wild. If we put our thinking caps on, how much do you think this vulnerability is actually worth? H…

The problem is they are being flooded with both fake AND real disclosures. Imagine if they tried to pay out $250,000 or more per bug? Would the cost be worth it? Maybe, but shareholders may not be pleased... Unless they viewed it as insurance against it being more financially sound for the finder to sell the exploit on the gray or black market instead...

Pre-flood, they didn’t pay more did they?

> viewed it as insurance

Of course. Beyond the ethics, the social obligation, sleeping well at night by compensating hardworking people fairly.

“We can’t pay more or we’d have to hire more human reviewers” should never be a massive company’s line of thinking.

Re: Actively exploited sandbox RCE in all Chromium versions

#65
post #23
post #7

Earlier quoted context omitted.

It means it can execute arbitrary machine code in the sandbox.

Okay, and why is that more of a security risk than executing arbitrary JavaScript in the sandbox?

Among other things, JavaScript in the browser has no way to even express "kill PID 1234 on the user's machine" or "list the contents of `C:\Users\Documents` and upload all of the files" or "spawn cmd.exe on the user's machine". How would you even do these things if you could run any JavaScript in the browser? You can't.

However, chrome.exe itself does because it's a native application, as is the sandboxed JavaScript interpreter inside of chrome.exe.

(This is a very oversimplified explanation but I think this is the disconnect people are having)

Re: Actively exploited sandbox RCE in all Chromium versions

#66
post #31

Earlier quoted context omitted.

Firefox with uBlock Origin. It’s astonishing how many exploits uBO stops before they ever reach your browser engine. It’s the antivirus of the 2020s.

I suggest Zen browser (fork of FF), it feels closer to chrome.

I hear about Zen. Random q:

It can’t trick Canva into letting you use the color picker, or otherwise enable it, can it - if someone happens to know?

(What a dumb feature to be locked to the Googlesphere.)

Re: Actively exploited sandbox RCE in all Chromium versions

#67

Normalising running arbitrary code delivered over the internet (in the form of JavaScript and WASM), as a necessary condition for accessing most web pages may not have been one of the best decisions we have made.

I remember noticing this shift in nerd culture. In the early 2000s, it was common for people to say on places like Slashdot that they don't trust JavaScript and run their browser with it off. In the early 2010s, I noticed HN commenters thought this was insane, tinfoil hat type thinking.

Re: Actively exploited sandbox RCE in all Chromium versions

#68

Let's take a moment to talk about the monetary value of this vulnerability. According to the Chrome release page ( https://chromereleases.googleblog.com/2026/09/stable-channel... ), Google paid a researcher $1000 for ethically reporting this. The CVE associated with it (CVE-2026-85046) is already being exploited in the wild. If we put our thinking caps on, how much do you think this vulnerability is actually worth? H…

this is why again, researchers should just honestly sell these to vuln brokers instead of donating them to trillion dollar companies for nothing.

nothing will change until big tech can no longer rip off security researchers

Re: Actively exploited sandbox RCE in all Chromium versions

#69
post #29

Let's take a moment to talk about the monetary value of this vulnerability. According to the Chrome release page ( https://chromereleases.googleblog.com/2026/09/stable-channel... ), Google paid a researcher $1000 for ethically reporting this. The CVE associated with it (CVE-2026-85046) is already being exploited in the wild. If we put our thinking caps on, how much do you think this vulnerability is actually worth? H…

The problem is they are being flooded with both fake AND real disclosures. Imagine if they tried to pay out $250,000 or more per bug? Would the cost be worth it? Maybe, but shareholders may not be pleased... Unless they viewed it as insurance against it being more financially sound for the finder to sell the exploit on the gray or black market instead...

it's such a drop in the bucket, it wouldn't make any difference

Re: Actively exploited sandbox RCE in all Chromium versions

#70
post #31

Earlier quoted context omitted.

Firefox with uBlock Origin. It’s astonishing how many exploits uBO stops before they ever reach your browser engine. It’s the antivirus of the 2020s.

I suggest Zen browser (fork of FF), it feels closer to chrome.

What does it mean "closer to chrome"?
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