Merge branch 'master' into remove_sockread
Conflicts: testssl.sh
This commit is contained in:
David Cooper
commit
3b3d16849d
136
testssl.sh
136
testssl.sh
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@ -4187,7 +4187,11 @@ certificate_info() {
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out "$indent" ; pr_bold " Signature Algorithm "
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case $cert_sig_algo in
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sha1WithRSAEncryption)
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pr_svrty_mediumln "SHA1 with RSA"
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pr_svrty_medium "SHA1 with RSA"
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if [[ "$SERVICE" == HTTP ]]; then
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out " -- besides: users will receive a strong browser warning"
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fi
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outln
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fileout "${json_prefix}algorithm" "MEDIUM" "Signature Algorithm: SHA1 with RSA (warning)"
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;;
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sha224WithRSAEncryption)
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@ -6008,8 +6012,12 @@ tls_sockets() {
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# mainly adapted from https://gist.github.com/takeshixx/10107280
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run_heartbleed(){
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local tls_proto_offered tls_hexcode heartbleed_payload client_hello
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local -i retval ret lines_returned bytes_returned
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local tls_proto_offered tls_hexcode
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local heartbleed_payload client_hello
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local -i n ret lines_returned
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local -i hb_rounds=3
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local append=""
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local found_500_oops=false
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[[ $VULN_COUNT -le $VULN_THRESHLD ]] && outln && pr_headlineln " Testing for heartbleed vulnerability " && outln
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pr_bold " Heartbleed"; out " (CVE-2014-0160) "
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@ -6017,8 +6025,8 @@ run_heartbleed(){
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[[ -z "$TLS_EXTENSIONS" ]] && determine_tls_extensions
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if ! grep -q heartbeat <<< "$TLS_EXTENSIONS"; then
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pr_done_best "not vulnerable (OK)"
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outln " (no heartbeat extension)"
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fileout "heartbleed" "OK" "Heartbleed (CVE-2014-0160): not vulnerable (OK) (no heartbeat extension)"
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outln ", no heartbeat extension"
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fileout "heartbleed" "OK" "Heartbleed (CVE-2014-0160): not vulnerable (OK), no heartbeat extension"
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return 0
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fi
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@ -6086,56 +6094,82 @@ run_heartbleed(){
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# extension: heartbeat
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x00, x0f, x00, x01, x01"
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fd_socket 5 || return 6
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for (( n=1; n <= hb_rounds; n++)); do
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fd_socket 5 || return 6
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debugme out "\nsending client hello (TLS version $tls_hexcode)"
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debugme outln " ($n of $hb_rounds)"
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socksend "$client_hello" 1
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debugme outln "\nsending client hello (TLS version $tls_hexcode)"
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socksend "$client_hello" 1
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debugme outln "\nreading server hello"
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sockread_serverhello 32768
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if [[ $DEBUG -ge 4 ]]; then
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hexdump -C "$SOCK_REPLY_FILE" | head -20
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outln "[...]"
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outln "\nsending payload with TLS version $tls_hexcode:"
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fi
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rm "$SOCK_REPLY_FILE"
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socksend "$heartbleed_payload" 1
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sockread_serverhello 16384 $HEARTBLEED_MAX_WAITSOCK
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retval=$?
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if [[ $DEBUG -ge 3 ]]; then
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outln "\nheartbleed reply: "
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hexdump -C "$SOCK_REPLY_FILE" | head -20
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bytes_returned="$(wc -c "$SOCK_REPLY_FILE" | awk '{ print $1 }')"
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[[ $bytes_returned -gt 320 ]] && outln "[...]"
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outln
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fi
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lines_returned=$(hexdump -ve '16/1 "%02x " " \n"' "$SOCK_REPLY_FILE" | wc -l | sed 's/ //g')
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rm "$SOCK_REPLY_FILE"
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if [[ $lines_returned -gt 1 ]]; then
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pr_svrty_critical "VULNERABLE (NOT ok)"
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if [[ $retval -eq 3 ]]; then
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fileout "heartbleed" "NOT ok" "Heartbleed (CVE-2014-0160): VULNERABLE (NOT ok) (timed out)"
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else
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fileout "heartbleed" "NOT ok" "Heartbleed (CVE-2014-0160): VULNERABLE (NOT ok)"
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debugme outln "\nreading server hello"
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sockread_serverhello 32768
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if [[ $DEBUG -ge 4 ]]; then
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hexdump -C "$SOCK_REPLY_FILE" | head -20
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outln "[...]"
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outln "\nsending payload with TLS version $tls_hexcode:"
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fi
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rm "$SOCK_REPLY_FILE"
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socksend "$heartbleed_payload" 1
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sockread_serverhello 16384 $HEARTBLEED_MAX_WAITSOCK
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[[ $? -eq 3 ]] && append=", timed out"
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lines_returned=$(hexdump -ve '16/1 "%02x " " \n"' "$SOCK_REPLY_FILE" | wc -l | sed 's/ //g')
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if [[ $DEBUG -ge 3 ]]; then
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outln "\nheartbleed reply: "
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hexdump -C "$SOCK_REPLY_FILE" | head -20
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[[ $lines_returned -gt 20 ]] && outln "[...]"
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outln
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fi
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if [[ $lines_returned -gt 1 ]]; then
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if [[ "$STARTTLS_PROTOCOL" == "ftp" ]] || [[ "$STARTTLS_PROTOCOL" == "ftps" ]]; then
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# check possibility of weird vsftpd reply, see #426
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saved_sockreply[n]="$(hexdump -ve '1/1 "%.2x"' "$SOCK_REPLY_FILE")"
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[[ $n -eq 1 ]] && grep -q '500 OOPS' "$SOCK_REPLY_FILE" && found_500_oops=true
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rm "$SOCK_REPLY_FILE"
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#debugme out "${saved_sockreply[n]}"
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#TMPFILE="${saved_sockreply[n]}"
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close_socket
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#tmpfile_handle "$FUNCNAME,$n.txt"
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else
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rm "$SOCK_REPLY_FILE"
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pr_svrty_critical "VULNERABLE (NOT ok)"
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fileout "heartbleed" "NOT ok" "Heartbleed (CVE-2014-0160): VULNERABLE (NOT ok)$append"
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ret=1
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break
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fi
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else
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rm "$SOCK_REPLY_FILE"
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pr_done_best "not vulnerable (OK)"
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fileout "heartbleed" "OK" "Heartbleed (CVE-2014-0160): not vulnerable (OK)$append"
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ret=0
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break
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fi
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done
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if [[ $n -gt 1 ]]; then
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# more than one round of heartbleed checks --> vsftpd probably.
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# This is the robust approach. According to a few tests it could also suffice # to check for "500 OOPS" only.
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# Checking for the same socket reply DOES NOT suffice -- server can be idle and return the same memory
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if [[ "${saved_sockreply[1]}" == "${saved_sockreply[2]}" ]] && [[ "${saved_sockreply[2]}" == "${saved_sockreply[3]}" ]] \
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&& "$found_500_oops"; then
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pr_done_best "not vulnerable (OK)$append"
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[[ $DEBUG -ge 1 ]] && out ", successful weeded out vsftpd false positive"
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fileout "heartbleed" "OK" "Heartbleed (CVE-2014-0160): not vulnerable (OK)$append"
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else
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out "likely "
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pr_svrty_critical "VULNERABLE (NOT ok)"
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[[ $DEBUG -ge 1 ]] && out " use debug >=2 to confirm"
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fileout "heartbleed" "NOT ok" "Heartbleed (CVE-2014-0160): likely VULNERABLE (NOT ok)$append"
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fi
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ret=1
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else
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pr_done_best "not vulnerable (OK)"
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if [[ $retval -eq 3 ]]; then
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fileout "heartbleed" "OK" "Heartbleed (CVE-2014-0160): not vulnerable (OK) (timed out)"
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else
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fileout "heartbleed" "OK" "Heartbleed (CVE-2014-0160): not vulnerable (OK)"
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fi
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ret=0
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# for the repeated tries we did that already
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#TMPFILE="$SOCKREPLY"
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close_socket 2>/dev/null
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#tmpfile_handle $FUNCNAME.txt
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fi
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[[ $retval -eq 3 ]] && out " (timed out)"
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outln
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outln "$append"
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close_socket
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tmpfile_handle $FUNCNAME.txt
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return $ret
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}
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@ -8751,4 +8785,4 @@ fi
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exit $?
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# $Id: testssl.sh,v 1.537 2016/09/01 17:09:11 dirkw Exp $
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# $Id: testssl.sh,v 1.540 2016/09/06 06:32:04 dirkw Exp $
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