[OpenSIPS-Devel] [ opensips-Bugs-3571806 ] Non-printable Characters in Via Host

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Bugs item #3571806, was opened at 2012-09-25 23:25
Message generated for change (Settings changed) made by bogdan_iancu
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Category: core
Group: 1.8.x
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: David Sanders (dmsanders)
>Assigned to: Bogdan-Andrei Iancu (bogdan_iancu)
Summary: Non-printable Characters in Via Host

Initial Comment:
RFC 3261 doesn't allow non-printable characters (minus CRLF ending the Via header) in the host portion of the Via header.

However, OpenSIPs seems to tolerate them. PJSIP has a bug that sends gibberish for a host in the Via on some unregisters. This is tolerated by OpenSIPs on receive, but causes issues later on in the reply, which goes out with a blank host. In particular nat_traversal can't parse the reply because the host is blank.

It seems that the parsing of the Via header should be tightened to only allow printable characters as a host.

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Comment By: Bogdan-Andrei Iancu (bogdan_iancu)
Date: 2012-10-12 06:57

Message:
David, could you post here such a bogus VIA ?

Thanks

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=1086410&aid=3571806&group_id=232389