Description (CNA)
BrowserStack Runner through 0.9.5 contains a remote code execution vulnerability in the /_log HTTP handler that allows unauthenticated network-adjacent attackers to execute arbitrary code by submitting crafted JSON request bodies to the handler, which passes user-supplied data to vm.runInNewContext() combined with eval(). Attackers can escape the Node.js vm sandbox by leveraging a host-context Function reference through util.format to access the host process via this.constructor.constructor, achieving full remote code execution on the underlying system without any authentication.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| browserstack / browserstack-runner | affected 0 through 0.9.5 |
CWE
CWE-94
References
- https://github.com/browserstack/browserstack-runner/security/advisories/GHSA-6vr3-7wcx-v5g5
- https://www.vulncheck.com/advisories/browserstack-runner-unauthenticated-rce-via-log-http-handler
ADP enrichment
No English description supplied.