How to address CVE-2017-1000254 on OpnSense

[curioustech]

Here is audit log.
=============================================================
***GOT REQUEST TO AUDIT***
vulnxml file up-to-date
curl-7.55.1 is vulnerable:
cURL -- out of bounds read
CVE: CVE-2017-1000254
WWW: https://vuxml.freebsd.org/freebsd/ccace707-a8d8-11e7-ac58-b499baebfeaf.html

1 problem(s) in the installed packages found.
***DONE***
=============================================================

As per https://vuxml.freebsd.org/freebsd/ccace707-a8d8-11e7-ac58-b499baebfeaf.html reference link in audit log, following are recommendations.

RECOMMENDATIONS
We suggest you take one of the following actions immediately, in order of preference:
A - Upgrade curl to version 7.56.0
B - Apply the patch to your version and rebuild
C - Switch off FTP in CURLOPT_PROTOCOLS

Option#A Because I am new to opnSense, I am not sure if will break anything else.
Option#B This something beyond my ability at this point. I think someone form OPNSense developer team can do this.
Option#C I do not know how to do it. So far this seem to be easy/safe option.

Can someone advice me if I am approaching this correctly?

[bartjsmit]

This will only affect you if you use FTP to transfer files onto the OPNsense firewall itself. I can't think of any good reason to do so; all the OPNsense updates are fetched by http/s.

Bart...

[franco]

Hi there,

We never fetch from FTP in our source code. Check your URL aliases and Proxy ACL download links for "ftp:" prefix and disable or better replace.

We'll update cURL in 17.7.6, but it's not a priority because if the given CVE scope.


Cheers,
Franco