> *Gecko*: Closed Without a Position (
https://github.com/mozilla/standards-positions/issues/143) 

It looks like it's closed with position: "worth prototyping", though? Or is 
there another issue that is closed without position?

On Monday, June 3, 2024 at 6:04:03 PM UTC+2 [email protected] wrote:

> Contact [email protected]
>
> ExplainerNone
>
> Specificationhttps://wicg.github.io/private-network-access
>
> Summary
>
> We propose to block access to IP address 0.0.0.0 in advance of PNA 
> completely rolling out. Chrome is deprecating direct access to private 
> network endpoints from public websites as part of the Private Network 
> Access (PNA) specification (
> https://developer.chrome.com/blog/private-network-access-preflight/). 
> Services listening on the localhost (127.0.0.0/8) are considered private 
> according to the specification (
> https://wicg.github.io/private-network-access/#ip-address-space-heading). 
> Chrome's PNA protection (rolled out as part of 
> https://chromestatus.com/feature/5436853517811712) can be bypassed using 
> the IP address 0.0.0.0 to access services listening on the localhost on 
> macOS and Linux. This can also be abused in DNS rebinding attacks targeting 
> a web application listening on the localhost. Since 0.0.0.0 is not used in 
> practice (and should not be used), but was overlooked during 
> https://chromestatus.com/feature/5436853517811712, we're deprecating it 
> separately from the rest of the private network requests deprecation. This 
> will be a Finch (experimental) rollout, rather than a Developer Trial.
>
>
> Blink componentBlink>SecurityFeature>CORS>PrivateNetworkAccess 
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ESecurityFeature%3ECORS%3EPrivateNetworkAccess>
>
> Search tagssecurity <https://chromestatus.com/features#tags:security>, 
> Private 
> Network Access 
> <https://chromestatus.com/features#tags:Private%20Network%20Access>
>
> TAG reviewNone
>
> TAG review statusNot applicable
>
> Chromium Trial NamePrivateNetworkAccessNullIpAddressAllowed
>
> Origin Trial documentation linkhttps://crbug.com/1300021
>
> WebFeature UseCounter namekPrivateNetworkAccessNullIpAddress
>
> Risks
>
>
> Interoperability and Compatibility
>
> None
>
>
> *Gecko*: Closed Without a Position (
> https://github.com/mozilla/standards-positions/issues/143)
>
> *WebKit*: Support (
> https://github.com/WebKit/standards-positions/issues/163)
>
> *Web developers*: No signals
>
> *Other signals*:
>
> WebView application risks
>
> Does this intent deprecate or change behavior of existing APIs, such that 
> it has potentially high risk for Android WebView-based applications?
>
> None
>
>
> Goals for experimentation
>
>
>
> Ongoing technical constraints
>
> Eventually, all private network access will be limited according to the 
> developing Private Network Access spec.
>
>
> Debuggability
>
> None
>
>
> Will this feature be supported on all six Blink platforms (Windows, Mac, 
> Linux, ChromeOS, Android, and Android WebView)?Yes
>
> Is this feature fully tested by web-platform-tests 
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
> ?No
>
> Flag name on chrome://flagsblock-null-ip-address
>
> Finch feature namePrivateNetworkAccessNullIpAddress
>
> Requires code in //chrome?False
>
> Tracking bughttps://crbug.com/1300021
>
> Estimated milestones
> Shipping on desktop 133
> Origin trial desktop first 127
> Origin trial desktop last 133
> DevTrial on desktop 127
> Shipping on Android 133
> OriginTrial Android last 133
> OriginTrial Android first 127
> DevTrial on Android 127
> Shipping on WebView 133
> OriginTrial webView last 133
> OriginTrial webView first 127
>
> Link to entry on the Chrome Platform Status
> https://chromestatus.com/feature/5106143060033536
>
> This intent message was generated by Chrome Platform Status 
> <https://chromestatus.com/>.
>

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