Merge pull request #2553 from drwetter/noCtrlCharInHeader
Remove crtl chars from HTTP header
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commit
031c2a55ec
10
testssl.sh
10
testssl.sh
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@ -2512,9 +2512,13 @@ run_http_header() {
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# Quit on first empty line to catch 98% of the cases. Next pattern is there because the SEDs tested
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# so far seem not to be fine with header containing x0d x0a (CRLF) which is the usual case.
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# So we also trigger also on any sign on a single line which is not alphanumeric (plus _)
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sed -e '/^$/q' -e '/^[^a-zA-Z_0-9]$/q' $HEADERFILE >$HEADERFILE.tmp
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#
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# Also we use tr here to remove any crtl chars which the server side offers --> possible security problem
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# Only allowed now is LF + CR. See #2337
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# awk, see above, doesn't seem to care
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sed -e '/^$/q' -e '/^[^a-zA-Z_0-9]$/q' $HEADERFILE | tr -d '\000-\011\013\014\016-\037' >$HEADERFILE.tmp
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# Now to be more sure we delete from '<' or '{' maybe with a leading blank until the end
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sed -e '/^ *<.*$/d' -e '/^ *{.*$/d' $HEADERFILE.tmp >$HEADERFILE
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sed -e '/^ *<.*$/d' -e '/^ *{.*$/d' $HEADERFILE.tmp >$HEADERFILE
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debugme echo -e "---\n $(< $HEADERFILE) \n---"
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HTTP_STATUS_CODE=$(awk '/^HTTP\// { print $2 }' $HEADERFILE 2>>$ERRFILE)
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@ -2589,7 +2593,7 @@ match_ipv4_httpheader() {
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# Exclude some headers as they are mistakenly identified as ipv4 address. Issues #158, #323.
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# Also facebook used to have a CSP rule for 127.0.0.1
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headers="$(grep -Evai "$excluded_header" $HEADERFILE)"
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headers="$(grep -Evai "$excluded_header" $HEADERFILE 2>/dev/null)"
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if [[ "$headers" =~ $ipv4address ]]; then
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pr_bold " IPv4 address in header "
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while read line; do
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