[asterisk-bugs] [JIRA] (ASTERISK-25490) SDP crypto tag is validated incorrectly

[Joerg Sonnenberger (JIRA)]

Joerg Sonnenberger created ASTERISK-25490:
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             Summary: SDP crypto tag is validated incorrectly
                 Key: ASTERISK-25490
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25490
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/SRTP
    Affects Versions: 11.20.0
         Environment: Interoperability with Snom D725
            Reporter: Joerg Sonnenberger


When trying to forward a call from a D725 with encrypted RTP, the crypto handshake fails as the phone tries to use a zero crypto tag.
A potential fix can be found in https://www.netbsd.org/~joerg/patch-channels_sip_sdp__crypto.c

The same issue should apply to newer releases as well, but I can't test that easily.



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