Skip to content

Conversation

@fixleftdev
Copy link
Owner

Lineaje has automatically created this pull request to resolve the following CVEs:

CVE ID Severity Description
CVE-2023-7080 Critical ### Impact 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. ### Patches 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

allowed access from the local network until [email protected]. [email protected]
and [email protected] introduced validation for the Origin/Host headers. ###
Workarounds Unfortunately, Wrangler doesn't provide any configuration for which
host that inspector server should listen on. Please upgrade to at least
[email protected], and configure Wrangler to listen on local interfaces instead
with wrangler dev --ip 127.0.0.1 to prevent SSRF. This removes the local
network as an attack vector, but does not prevent an attack from visiting a
malicious website. ### References -
cloudflare/workers-sdk#4430 -
cloudflare/workers-sdk#4437 -
cloudflare/workers-sdk#4535 -
cloudflare/workers-sdk#4550

You can merge this PR once the tests pass and the changes are reviewed.

Thank you for reviewing the update! 🚀

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants