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tools: relax x509 Subject regexes to allow numbers and more

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The virt-pki-validate tool is extracting components in the x509
certificate Subject field. Unfortunately the regex it is is using is far
too strict, and so truncating valid data. It needs to consider ',' as a
field separator, and if that's not there take all data until the EOL.

With the broken regex:

$ echo "  Subject: O=Test,CN=guestHyp1ver"  | sed 's+.*CN=\(.[a-zA-Z \._-]*\).*+\1+'
guestHyp

And with the fixed regex

$ echo "Subject: O=Test,CN=guestHyp1ver"  | sed 's+.*CN=\([^,]*\).*+\1+'
guestHyp1ver

Reported-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2018-12-10 16:50:10 +00:00
parent 1215195fd8
commit ecf8619430
1 changed files with 4 additions and 4 deletions
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8
tools/virt-pki-validate.in
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@ -201,14 +201,14 @@ then
echo Client certificate $LIBVIRT/clientcert.pem should be world readable
echo "as root do: chown root:root $LIBVIRT/clientcert.pem ; chmod 644 $LIBVIRT/clientcert.pem"
else
S_ORG=`"$CERTOOL" -i --infile "$LIBVIRT/clientcert.pem" | grep Subject: | sed 's+.*O=\([a-zA-Z \._-]*\).*+\1+'`
S_ORG=`"$CERTOOL" -i --infile "$LIBVIRT/clientcert.pem" | grep Subject: | sed 's+.*O=\([^,]*\).*+\1+'`
if [ "$ORG" != "$S_ORG" ]
then
echo The CA certificate and the client certificate do not match
echo CA organization: $ORG
echo Client organization: $S_ORG
fi
CLIENT=`"$CERTOOL" -i --infile "$LIBVIRT/clientcert.pem" | grep Subject: | sed 's+.*CN=\(.[a-zA-Z \._-]*\).*+\1+'`
CLIENT=`"$CERTOOL" -i --infile "$LIBVIRT/clientcert.pem" | grep Subject: | sed 's+.*CN=\(.[^,]*\).*+\1+'`
echo Found client certificate $LIBVIRT/clientcert.pem for $CLIENT
if [ ! -e "$LIBVIRTP/clientkey.pem" ]
then
@ -248,14 +248,14 @@ then
echo Server certificate $LIBVIRT/servercert.pem should be world readable
echo "as root do: chown root:root $LIBVIRT/servercert.pem ; chmod 644 $LIBVIRT/servercert.pem"
else
S_ORG=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*O=\([a-zA-Z\. _-]*\).*+\1+'`
S_ORG=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*O=\([^,]*\).*+\1+'`
if [ "$ORG" != "$S_ORG" ]
then
echo The CA certificate and the server certificate do not match
echo CA organization: $ORG
echo Server organization: $S_ORG
fi
S_HOST=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*CN=\(.[a-zA-Z \._-]*\).*+\1+'`
S_HOST=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*CN=\([^,]*\).*+\1+'`
if test "$S_HOST" != "`hostname -s`" && test "$S_HOST" != "`hostname`"
then
echo The server certificate does not seem to match the host name