[gnutls-devel] GnuTLS | Renegotiation with both renegotiation_info and SCSV at once is allowed (#828)

Development of GNU's TLS library gnutls-devel at lists.gnutls.org
Thu Sep 12 09:58:03 CEST 2019




t184256 commented:


Wait, seems like I wasn't paying enough attention to the RFC =(

(https://tools.ietf.org/html/rfc5746#section-3.7, Server Behavior: Secure Renegotiation)

* When a ClientHello is received, the server MUST verify that it
  does not contain the TLS_EMPTY_RENEGOTIATION_INFO_SCSV SCSV.  If
  the SCSV is present, the server MUST abort the handshake.

Seems like not aborting on receiving both is non-compliant after all.

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