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|
#! /bin/sh
set -eu
vuxml_file="$1"
CVE_ID=""
SA_ID=""
show_usage() {
exec >&2
echo "Usage: newentry.sh /path/to/vuxml/document [CVE_ID|SA_ID]"
exit 1
}
if [ -z "${vuxml_file}" ]; then
show_usage
fi
shift
while [ $# -gt 0 ]; do
case "$1" in
CVE_ID=*)
CVE_ID="${1#CVE_ID=}"
shift
;;
SA_ID=*)
SA_ID="${1#SA_ID=}"
shift
;;
*)
echo "Invalid argument: $1"
show_usage
exit 1
;;
esac
done
tmp="`mktemp ${TMPDIR:-/tmp}/vuxml.XXXXXXXXXX`" || exit 1
tmp_fbsd_sa=""
tmp_mitre=""
tmp_nvd=""
doclean="yes"
cleanup() {
if [ "${doclean}" = "yes" ]; then
rm -f "${tmp}" "${tmp_fbsd_sa}" "${tmp_mitre}" "${tmp_nvd}" > /dev/null
fi
}
trap cleanup EXIT 1 2 13 15
vid="`uuidgen | tr '[:upper:]' '[:lower:]'`"
[ -z "$vid" ] && exit 1
cvename="INSERT CVE RECORD IF AVAILABLE"
cveurl="INSERT BLOCKQUOTE URL HERE"
details="."
discovery="`date -u '+%Y-%m'`-FIXME" || exit 1
entry="`date -u '+%Y-%m-%d'`" || exit 1
package_name=""
references="INSERT URL HERE"
topic=""
source="SO-AND-SO"
upstream_fix=""
impact=""
DESC_BODY="<body xmlns=\"http://www.w3.org/1999/xhtml\">
<p>${source} reports:</p>
<blockquote cite=\"${references}\">
<p>${details}</p>
</blockquote>
</body>"
# Try to retrieve information if a CVE identifier was provided
if [ -n "${CVE_ID}" ]; then
if ! command -v jq > /dev/null; then
echo textproc/jq is needed for CVE automatic entry fill
exit 1
fi
# NVD database only accepts uppercase CVE ids, like CVE-2022-39282, NOT
# cve-2022-39282.
CVE_ID=$(echo "${CVE_ID}" | tr '[:lower:]' '[:upper:]') || exit 1
# Get information from the NVD database JSON format
tmp_nvd="`mktemp ${TMPDIR:-/tmp}/nvd_json_data.XXXXXXXXXX`" || exit 1
fetch -q -o "${tmp_nvd}" https://services.nvd.nist.gov/rest/json/cves/2.0?cveId="${CVE_ID}" || exit 1
# Get information from MITRE database (they provide a nice "topic")
tmp_mitre="`mktemp ${TMPDIR:-/tmp}/mitre.XXXXXXXXXX`" || exit 1
fetch -q -o "${tmp_mitre}" https://cveawg.mitre.org/api/cve/"${CVE_ID}"
# Create variables from input and online sources
cvename="${CVE_ID}"
cveurl=https://nvd.nist.gov/vuln/detail/${CVE_ID}
pref=.vulnerabilities[0].cve
details=$(jq -r "${pref}.descriptions[0].value|@html" "${tmp_nvd}" | fmt -p -s | sed '1!s/^/\t/') || exit 1
discovery=$(jq -r "${pref}.published|@html" "${tmp_nvd}" | cut -f1 -dT) || exit 1
pref=.vulnerabilities[0].cve.configurations[0].nodes[0].cpeMatch[0]
package_name=$(jq -r "${pref}.criteria|@html" "${tmp_nvd}" | cut -f4 -d:) || exit 1
upstream_fix=$(jq -r "${pref}.versionEndExcluding|@html" "${tmp_nvd}") || exit 1
pref=.vulnerabilities[0].cve.references[0]
references=$(jq -r "${pref}.url|@html" "${tmp_nvd}" | tr " " "\n") || exit 1
source=$(jq -r "${pref}.source|@html" "${tmp_nvd}" | tr " " "\n") || exit 1
topic=$(jq -r ".containers.cna.title|@html" "${tmp_mitre}" ) || exit 1
DESC_BODY="<body xmlns=\"http://www.w3.org/1999/xhtml\">
<p>${source} reports:</p>
<blockquote cite=\"${references}\">
<p>${details}</p>
</blockquote>
</body>"
fi
if [ -n "${SA_ID}" ]; then
SA_URL_BASE=https://www.freebsd.org/security/advisories/
# Get information from the Project's SA site
tmp_fbsd_sa="$(mktemp ${TMPDIR:-/tmp}/fbsd_sa_data.XXXXXXXXXX)" || exit 1
fetch -q -o "${tmp_fbsd_sa}" ${SA_URL_BASE}${SA_ID} || exit 1
# Create variables from SA note
if grep -q 'CVE Name' "${tmp_fbsd_sa}"; then
cve_tmp=$(grep 'CVE Name' "${tmp_fbsd_sa}" | cut -f2 -d:) || exit 1
cvename="${cve_tmp#"${cve_tmp%%[![:space:]]*}"}"
# NVD database only accepts uppercase CVE ids, like CVE-2022-39282, NOT
# cve-2022-39282.
cvename=$(echo "${cvename}" | tr '[:lower:]' '[:upper:]') || exit 1
cveurl="https://nvd.nist.gov/vuln/detail/${cvename}"
fi
details=$(awk '/II. Problem Description/ {f=1;next;next} /III. Impact/ {f=0} (f==1) {print}' "${tmp_fbsd_sa}" ) || exit 1
details=$(echo "<p>${details}</p>" | fmt -p -s | sed -e 's/<p> /<p>/' | sed '1!s/^/\t/')
impact=$(awk '/III. Impact/ {f=1;next;next} /IV. Workaround/ {f=0} (f==1) {print}' "${tmp_fbsd_sa}") || exit 1
impact=$(echo "<p>${impact}</p>" | fmt -p -s | sed -e 's/<p> /<p>/' | sed '1!s/^/\t/')
package_name="FreeBSD"
if grep -Eq 'Module:.*kernel' "${tmp_fbsd_sa}"; then
package_name="${package_name}-kernel"
fi
upstream_fix="FIXME"
references="${SA_URL_BASE}${SA_ID}"
source="The FreeBSD Project"
topic_tmp=$(grep 'Topic:' "${tmp_fbsd_sa}" | cut -f2 -d:) || exit 1
topic="${topic_tmp#"${topic_tmp%%[![:space:]]*}"}"
DESC_BODY="<body xmlns=\"http://www.w3.org/1999/xhtml\">
<h1>Problem Description:</h1>
${details}
<h1>Impact:</h1>
${impact}
</body>"
fi
awk '/^<\?/,/^<vuxml/ { print }' "${vuxml_file}" >> "${tmp}" || exit 1
cat << EOF >> "${tmp}" || exit 1
<vuln vid="${vid}">
<topic>${package_name} -- ${topic}</topic>
<affects>
<package>
<name>${package_name}</name>
<range><lt>${upstream_fix}</lt></range>
</package>
</affects>
<description>
${DESC_BODY}
</description>
<references>
<cvename>${cvename}</cvename>
<url>${cveurl}</url>
</references>
<dates>
<discovery>${discovery}</discovery>
<entry>${entry}</entry>
</dates>
</vuln>
EOF
awk '/^[[:space:]]+<vuln /,/^NONE$/ { print }' \
"${vuxml_file}" >> "${tmp}" || exit 1
if cp "${tmp}" "${vuxml_file}"; then
exec ${EDITOR:-vi} "${vuxml_file}"
else
doclean="no"
exec >&2
echo "Could not overwrite \`${vuxml_file}'."
echo "Results are left in \`${tmp}'."
exit 1
fi
|
