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fix: catch cidr network in ssh keys (#236)

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Co-authored-by: Ismaël Tanguy <ismael.tanguy@ovhcloud.com>
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Isma399 2024-02-22 17:55:03 +01:00 committed by GitHub
parent 3bd4078e70
commit 43fc23ee40
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GPG Key ID: B5690EEEBB952194
2 changed files with 3 additions and 3 deletions
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2
bin/hardening/99.5.2.4_ssh_keys_from.sh
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@ -19,7 +19,7 @@ DESCRIPTION="Check <from> field in ssh authorized keys files for users with logi
# Regex looking for empty, hash starting lines, or 'from="127.127.127,127.127.127" ssh' # Regex looking for empty, hash starting lines, or 'from="127.127.127,127.127.127" ssh'
# shellcheck disable=2089 # shellcheck disable=2089
REGEX_FROM_IP="from=(?:'|\")(,?(\d{1,3}(\.\d{1,3}){3}))+(?:'|\")" REGEX_FROM_IP="from=(?:'|\")(,?(\d{1,3}(\.\d{1,3}){3})(\/\d{1,2})?)+(?:'|\")"
REGEX_OK_LINES="(^(#|$)|($REGEX_FROM_IP))" REGEX_OK_LINES="(^(#|$)|($REGEX_FROM_IP))"
AUTHKEYFILE_PATTERN="" AUTHKEYFILE_PATTERN=""
AUTHKEYFILE_PATTERN_DEFAULT=".ssh/authorized_keys .ssh/authorized_keys2" AUTHKEYFILE_PATTERN_DEFAULT=".ssh/authorized_keys .ssh/authorized_keys2"

4
tests/hardening/99.5.2.4_ssh_keys_from.sh
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@ -72,11 +72,11 @@ test_audit() {
run allwdfromip "${CIS_CHECKS_DIR}/${script}.sh" --audit-all run allwdfromip "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
# shellcheck disable=2016 # shellcheck disable=2016
echo 'ALLOWED_IPS="$ALLOWED_IPS 127.0.0.1,10.2.3.1"' >>"${CIS_CONF_DIR}/conf.d/${script}.cfg" echo 'ALLOWED_IPS="$ALLOWED_IPS 127.0.0.1,10.2.3.1/8"' >>"${CIS_CONF_DIR}/conf.d/${script}.cfg"
{ {
echo -n 'from="10.0.1.2",command="echo bla" ' echo -n 'from="10.0.1.2",command="echo bla" '
cat /tmp/key1.pub cat /tmp/key1.pub
echo -n 'command="echo bla,from="10.0.1.2,10.2.3.1"" ' echo -n 'command="echo bla,from="10.0.1.2,10.2.3.1/8"" '
cat /tmp/key1.pub cat /tmp/key1.pub
} >>/home/secaudit/.ssh/authorized_keys2 } >>/home/secaudit/.ssh/authorized_keys2
describe Key with from and command options describe Key with from and command options