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Check for matching SSLv2 cipher

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Some servers respond to an SSLv2 ClientHello with a list of all SSLv2 ciphers that the server supports rather than just a list of ciphers that it supports in common with the client (i.e., that appear in the ClientHello). This PR changes the sockets version of `std_cipherlists()` so that, if `sslv2_sockets()` is successful, it checks whether there are any ciphers in common between the ClientHello and the ServerHello before declaring that the server supports the specified cipher list.
This commit is contained in:
David Cooper 2017-01-04 10:34:13 -05:00 committed by GitHub
parent c0c041b1c2
commit c1d072b7a8
1 changed files with 11 additions and 3 deletions
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testssl.sh
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@ -2015,7 +2015,8 @@ listciphers() {
# argv[5]: non-SSLv2 cipher list to test (hexcodes), if using sockets
# argv[6]: SSLv2 cipher list to test (hexcodes), if using sockets
std_cipherlists() {
local -i sclient_success
local -i i len sclient_success
local sslv2_cipherlist detected_ssl2_ciphers
local singlespaces proto="" addcmd=""
local debugname="$(sed -e s'/\!/not/g' -e 's/\:/_/g' <<< "$1")"
@ -2040,8 +2041,15 @@ std_cipherlists() {
sclient_success=$?
debugme cat $ERRFILE
elif [[ -n "$6" ]]; then
sslv2_sockets "$6"
[[ $? -eq 3 ]] && [[ "$V2_HELLO_CIPHERSPEC_LENGTH" -ne 0 ]] && sclient_success=0
sslv2_sockets "$6" "true"
if [[ $? -eq 3 ]] && [[ "$V2_HELLO_CIPHERSPEC_LENGTH" -ne 0 ]]; then
sslv2_cipherlist="$(strip_spaces "${6//,/}")"
len=${#sslv2_cipherlist}
detected_ssl2_ciphers="$(grep "Supported cipher: " "$TEMPDIR/$NODEIP.parse_sslv2_serverhello.txt")"
for (( i=0; i<len; i=i+6 )); do
[[ "$detected_ssl2_ciphers" =~ "x${sslv2_cipherlist:i:6}" ]] && sclient_success=0 && break
done
fi
fi
fi
case $3 in