[asterisk-bugs] [JIRA] (ASTERISK-26955) SIP Packets with Via "received=" Containing IPv6 Address Delimited by "[]" Rejected

[Peter Sokolov (JIRA)]

Peter Sokolov created ASTERISK-26955:
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             Summary: SIP Packets with Via "received=" Containing IPv6 Address Delimited by "[]" Rejected
                 Key: ASTERISK-26955
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26955
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: pjproject/pjsip
    Affects Versions: 14.3.0
            Reporter: Peter Sokolov


When using PJSIP and a SIP packet containing Via "received" with an IPv6 address delimited by "[" and "]" is received, PJSIP drops such a packet complaining about the "[" and "]". No calls can be established.

Via: SIP/2.0/UDP [2001:db8::9:1];received=[2001:db8::9:255];branch=z9hG4bKas3-111

RFC5118 sais that even though this is not a valid request based on a strict interpretation of the grammar in [RFC3261], robust implementations must nonetheless be able to parse the topmost Via header field and continue processing the request. I assume that Asterisk should be treated as a robust implementation.



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