GHSA-r4m5-47cq-6qg8
Server-Side Request Forgery in ftp-srv
Quick fix
GHSA-r4m5-47cq-6qg8 — ftp-srv: upgrade to the fixed version with the command below.
npm install ftp-srv@2.19.6Details
All versions of `ftp-srv` from v1.0.0 onward to v4.3.3 are vulnerable to Server-Side Request Forgery (SSRF). The package fails to prevent remote clients to access other resources in the network, for example when connecting to the server through telnet. This allows attackers to access any network resources available to the server, including private resources in the hosting environment.
## Recommendation
Upgrade to patched versions `^2.19.6, ^3.1.2, ^4.3.4`
## Workarounds Blacklisting the FTP Command PORT will prevent the server from exposing this behaviour through active connections until a fix is applied.
``` const ftp = new FtpSrv({ blacklist: ['PORT'] }); ```
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