GHSA-4mw5-2636-4535 op_panic in the base runtime can force a panic in the runtime's containing thread
Attackers can crash the host thread and break sandboxing by calling an exposed panic function in the Deno core runtime.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GHSA-4mw5-2636-4535?
GHSA-4mw5-2636-4535 is a denial of service vulnerability in js-sandbox, published on 18 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Affected versions use deno_core releases that expose Deno.core.ops.op_panic to the JS runtime in the base core
This function when called triggers a manual panic in the thread containing the runtime, breaking sandboxing
It can be fixed by stubbing out the exposed op:
Deno.core.ops.op_panic = (msg) => { throw new Error(msg) };
Which versions are affected by GHSA-4mw5-2636-4535?
3 open source packages ship an affected version, including js-sandbox.
| Package | Affected | Fixed in |
|---|---|---|
js-sandbox crates.io | All versions to 0.1.6 | None |
js-sandbox crates.io | All versions to 0.1.6 | None |
js-sandbox crates.io | From 0.0.0-0 | None |
How do I fix GHSA-4mw5-2636-4535?
No fix has been published for GHSA-4mw5-2636-4535 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GHSA-4mw5-2636-4535 being exploited?
There is no known exploitation of GHSA-4mw5-2636-4535 in the wild and no public exploit code.
Sources
Also known as RUSTSEC-2024-0403.