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Merge pull request #1449 from drwetter/pr_1070 

Reimplement mitigation check (renegotiation->node.js)
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Dirk Wetter 2020-01-15 13:09:39 +01:00 committed by GitHub
parent 2a87f7505d 2ed317441f
commit 520a4fbf75
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1 changed files with 20 additions and 4 deletions
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testssl.sh
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@ -14407,12 +14407,28 @@ run_renego() {
echo R | $OPENSSL s_client $(s_client_options "$proto $legacycmd $STARTTLS $BUGS -msg -connect $NODEIP:$PORT $PROXY") >$TMPFILE 2>>$ERRFILE
sec_client_renego=$? # 0=client is renegotiating & doesn't return an error --> vuln!
case "$sec_client_renego" in
0) if [[ $SERVICE == HTTP ]]; then
pr_svrty_high "VULNERABLE (NOT ok)"; outln ", DoS threat"
fileout "$jsonID" "HIGH" "VULNERABLE, DoS threat" "$cve" "$cwe" "$hint"
else
0) # We try again if server is HTTP. This could be either a node.js server or something else.
# node.js has a mitigation which allows 3x R and then blocks. So we test 4x
# This way we save a couple seconds as we weeded out the ones which are more robust
if [[ $SERVICE != HTTP ]]; then
pr_svrty_medium "VULNERABLE (NOT ok)"; outln ", potential DoS threat"
fileout "$jsonID" "MEDIUM" "VULNERABLE, potential DoS threat" "$cve" "$cwe" "$hint"
else
(for i in {1..4}; do echo R; sleep 1; done) | \
$OPENSSL s_client $(s_client_options "$proto $legacycmd $STARTTLS $BUGS -msg -connect $NODEIP:$PORT $PROXY") >$TMPFILE 2>>$ERRFILE
case $? in
0) pr_svrty_high "VULNERABLE (NOT ok)"; outln ", DoS threat"
fileout "$jsonID" "HIGH" "VULNERABLE, DoS threat" "$cve" "$cwe" "$hint"
;;
1) pr_svrty_good "not vulnerable (OK)"
outln " -- mitigated"
fileout "$jsonID" "OK" "not vulnerable, mitigated" "$cve" "$cwe"
;;
*) prln_warning "FIXME (bug): $sec_client_renego (4 tries)"
fileout "$jsonID" "DEBUG" "FIXME (bug 4 tries) $sec_client_renego" "$cve" "$cwe"
ret=1
;;
esac
fi
;;
1)