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testssl.sh
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Process TLSv1.3 status_request extension 

In TLSv1.2 and below, servers respond to a status_request extension (a request for a stapled OCSP response) by returning an empty status_request extension and then including a CertificateStatus message, which follows the Certificate message. In TLSv1.3 the CertificateStatus response is included as the value of the status_request extension, which now appears as an extension within the Certificate message.

This PR extracts the contents of the status_request extension sent by the server so that it can later be processed in the same way as if it had sent in a TLSv1.2 or below response.
This commit is contained in:
David Cooper 2017-12-20 10:17:21 -05:00 committed by GitHub
parent f53d601325
commit 65e435eb70
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1 changed files with 11 additions and 1 deletions
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testssl.sh
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@ -9663,7 +9663,17 @@ parse_tls_serverhello() {
0002) tls_extensions+="TLS server extension \"client certificate URL\" (id=2), len=$extension_len\n" ;;
0003) tls_extensions+="TLS server extension \"trusted CA keys\" (id=3, len=$extension_len\n)" ;;
0004) tls_extensions+="TLS server extension \"truncated HMAC\" (id=4), len=$extension_len\n" ;;
0005) tls_extensions+="TLS server extension \"status request\" (id=5), len=$extension_len\n" ;;
0005) tls_extensions+="TLS server extension \"status request\" (id=5), len=$extension_len\n"
if [[ $extension_len -gt 0 ]] && [[ "$process_full" == "all" ]]; then
# In TLSv1.3 the status_request extension contains the CertificateStatus message, unlike
# TLSv1.2 and below where CertificateStatus appears in its own handshake message. So, if
# the status_request extension is not empty, extract the value and place it in
# $tls_certificate_status_ascii.
tls_certificate_status_ascii_len=$extension_len
let offset=$extns_offset+12+$i
tls_certificate_status_ascii="${tls_serverhello_ascii:offset:tls_certificate_status_ascii_len}"
fi
;;
0006) tls_extensions+="TLS server extension \"user mapping\" (id=6), len=$extension_len\n" ;;
0007) tls_extensions+="TLS server extension \"client authz\" (id=7), len=$extension_len\n" ;;
0008) tls_extensions+="TLS server extension \"server authz\" (id=8), len=$extension_len\n" ;;