The V8 inspector intentionally allows arbitrary code execution within the Workers sandbox for debugging. wrangler dev would previously start an inspector server listening on all network interfaces. This would allow an attacker on the local network to connect to the inspector and run arbitrary code. Additionally, the inspector server did not validate Origin/Host headers, granting an attacker that can trick any user on the local network into opening a malicious website the ability to run code. If wrangler dev --remote was being used, an attacker could access production resources if they were bound to the worker.
This issue was fixed in [email protected] and [email protected]. Whilst wrangler dev's inspector server listens on local interfaces by default as of [email protected], an SSRF vulnerability in miniflare https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-fwvg-2739-22v7 (CVE-2023-7078) allowed access from the local network until [email protected]. [email protected] and [email protected] introduced validation for the Origin/Host headers.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: cloudflare
Published: 2023-12-29T11:58:36.214Z
Updated: 2024-08-02T08:50:07.794Z
Reserved: 2023-12-22T09:59:52.954Z
Link: CVE-2023-7080
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-12-29T12:15:47.970
Modified: 2024-11-21T08:45:12.610
Link: CVE-2023-7080
Redhat
No data.