BrowserStack Runner 0.9.5 Unauthenticated RCE via /_log HTTP Handler
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| browserstack | browserstack-runner | affected |
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| Browserstack | Browserstack-runner |
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| Source | ID | Title |
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Github GHSA |
GHSA-6vr3-7wcx-v5g5 | browserstack-runner vulnerable to Remote Code Execution via vm sandbox escape in _log HTTP handler |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.802% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Browserstack browserstack-local
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| CPEs | cpe:2.3:a:browserstack:browserstack-local:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Browserstack browserstack-local
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| Metrics |
ssvc
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| First Time appeared |
Browserstack
Browserstack browserstack-runner |
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| Vendors & Products |
Browserstack
Browserstack browserstack-runner |
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| Description | 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. | |
| Title | BrowserStack Runner 0.9.5 Unauthenticated RCE via /_log HTTP Handler | |
| Weaknesses | CWE-94 | |
| References |
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| Metrics |
cvssV3_1
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