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Merge pull request #578 from dcooper16/fix_sslv2_sockets

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sslv2_sockets() bug fixes
This commit is contained in:
Dirk Wetter
2017-01-08 15:58:01 +01:00
committed by GitHub
parent 0b24e80057 d66e5ec0d7
commit b99371c069
1 changed files with 36 additions and 2 deletions
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38
testssl.sh
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@@ -7063,6 +7063,7 @@ parse_sslv2_serverhello() {
"$parse_complete" && echo "======================================" > $TMPFILE
v2_hello_ascii=$(hexdump -v -e '16/1 "%02X"' $1)
v2_hello_ascii="${v2_hello_ascii%%[!0-9A-F]*}"
[[ "$DEBUG" -ge 5 ]] && echo "$v2_hello_ascii"
if [[ -z "$v2_hello_ascii" ]]; then
ret=0 # 1 line without any blanks: no server hello received
@@ -7094,6 +7095,10 @@ parse_sslv2_serverhello() {
echo "SSLv2 certificate length: 0x$v2_hello_cert_length"
echo "SSLv2 cipher spec length: 0x$v2_hello_cipherspec_length"
fi
if "$parse_complete" && [[ 2*$(hex2dec "$v2_hello_length") -ne ${#v2_hello_ascii}-4 ]]; then
ret=7
fi
fi
"$parse_complete" || return $ret
@@ -7105,7 +7110,11 @@ parse_sslv2_serverhello() {
if [[ "$v2_cert_type" == "01" ]] && [[ "$v2_hello_cert_length" != "00" ]]; then
tmp_der_certfile=$(mktemp $TEMPDIR/der_cert.XXXXXX) || return $ret
asciihex_to_binary_file "${v2_hello_ascii:26:certificate_len}" "$tmp_der_certfile"
$OPENSSL x509 -inform DER -in $tmp_der_certfile -outform PEM -out $HOSTCERT
$OPENSSL x509 -inform DER -in $tmp_der_certfile -outform PEM -out $HOSTCERT 2>$ERRFILE
if [[ $? -ne 0 ]]; then
debugme echo "Malformed certificate in ServerHello."
return 1
fi
rm $tmp_der_certfile
get_pub_key_size
echo "======================================" >> $TMPFILE
@@ -8100,6 +8109,13 @@ sslv2_sockets() {
local ret
local client_hello cipher_suites len_client_hello
local len_ciph_suites_byte len_ciph_suites
local server_hello sock_reply_file2
local -i response_len server_hello_len
local parse_complete=false
if [[ "$2" == "true" ]]; then
parse_complete=true
fi
if [[ -n "$1" ]]; then
cipher_suites="$1"
@@ -8140,13 +8156,31 @@ sslv2_sockets() {
socksend_sslv2_clienthello "$client_hello"
sockread_serverhello 32768
if "$parse_complete"; then
server_hello=$(hexdump -v -e '16/1 "%02X"' "$SOCK_REPLY_FILE")
server_hello_len=2+$(hex2dec "${server_hello:1:3}")
response_len=$(wc -c "$SOCK_REPLY_FILE" | awk '{ print $1 }')
for (( 1; response_len < server_hello_len; 1 )); do
sock_reply_file2=$(mktemp $TEMPDIR/ddreply.XXXXXX) || return 7
mv "$SOCK_REPLY_FILE" "$sock_reply_file2"
debugme echo "requesting more server hello data..."
socksend "" $USLEEP_SND
sockread_serverhello 32768
[[ ! -s "$SOCK_REPLY_FILE" ]] && break
cat "$SOCK_REPLY_FILE" >> "$sock_reply_file2"
mv "$sock_reply_file2" "$SOCK_REPLY_FILE"
response_len=$(wc -c "$SOCK_REPLY_FILE" | awk '{ print $1 }')
done
fi
debugme outln "reading server hello... "
if [[ "$DEBUG" -ge 4 ]]; then
hexdump -C "$SOCK_REPLY_FILE" | head -6
outln
fi
parse_sslv2_serverhello "$SOCK_REPLY_FILE" "$2"
parse_sslv2_serverhello "$SOCK_REPLY_FILE" "$parse_complete"
ret=$?
close_socket