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What are the security implications in disclosing the composer.lock file for a remote, public known, web application?

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    I think this falls under the same category of any disclosure of specific versions of software used on a server ... – schroeder Dec 5 '18 at 22:45
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As composer can describe the

exact version numbers, and are useful to communicate the version you tested with to colleagues or when publishing an application

Reference #1

Revealing the version of the underlying library can be used against the application.

composer.lock file also ensures consistency across clusters of servers

It will ensure that all the servers behind a Load balance will be evenly vulnerable which will make the exploit more stable against a target.

Reference #2

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