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#!/bin/sh
# Copyright 2009-2013 Canonical, Ltd.
# Authors:
# Jamie Strandboge <jamie@canonical.com>
# Kees Cook <kees@ubuntu.com>
# Marc Deslauriers <marc.deslauriers@canonical.com>
#
# Script to help triage CVEs based on Triage Frequency in $UCT/README
#
set -e
loc=$(readlink -f "$(dirname "$0")/..")
uctconf="$HOME/.ubuntu-cve-tracker.conf"
if [ -s "$uctconf" ]; then
. "$uctconf"
else
echo "Could not find '$uctconf'" >&2
exit 1
fi
is_http_url() {
url="$1"
echo "$url" | grep -q "^http"
}
download() {
url="$1"
# if http, then download it with wget, otherwise, try to rsync it
if is_http_url "$url" ; then
# Force the gzipped XML to be downloaded
# Required for nvdcve-recent.xml as of 2015-10-16
url="${url}.gz"
file=$(basename "$url")
echo "wget -N \"$url\""
wget -N "$url" ||:
gunzip -f "$file"
else
echo "rsync -vz --progress \"$url\" ."
rsync -vz --progress "$url" .
fi
echo "---"
}
download_yearly_files() {
base_url="${nvd_loc:-https://nvd.nist.gov/download}/"
# if http, download each file sequentially, otherwise, use glob with rsync
if is_http_url "$base_url" ; then
current_year=$(date +%Y)
for year in $(seq 2004 "$current_year"); do
download "${base_url}nvdcve-${year}.xml"
done
else
# TODO: Make Y3K compliant
download "${base_url}nvdcve-2*.xml"
fi
}
update_debian() {
# Update Debian SVN
if [ -n "$secure_testing_path" ] && [ -d "${secure_testing_path}/.git" ] ; then
echo "Updating '$secure_testing_path'"
cd "$secure_testing_path"
git fetch --all -p -t && git pull --ff-only || echo "Error updating Debian tree"
cd "$loc"
fi
}
update_files() {
download "${mitre_loc:-https://cve.mitre.org/data/downloads}/allitems.xml"
download_yearly_files
download "https://nvd.nist.gov/download/nvdcve-recent.xml"
}
full_refresh() {
# get PubDate
echo "update PubDate (check-cves --refresh nvdcve-*.xml) ..."
./scripts/check-cves --refresh nvdcve-*.xml
# get authoritative descriptions
echo "get authoritative descriptions (check-cves --refresh ./allitems.xml) ..."
./scripts/check-cves --refresh ./allitems.xml
}
kernel_team_merge() {
echo "Merging with kernel team CVE tracker"
kernelteam='lp:~canonical-kernel-team/ubuntu-cve-tracker/kernel-team'
if ! bzr missing --theirs-only $kernelteam ; then
# Find their most recent merge point
lastmerge=$(bzr missing --mine-only $kernelteam | grep revno | cut -d' ' -f2 | tail -n1)
if [ -n "$lastmerge" ]; then
lastmerge=$((lastmerge - 1))
else
lastmerge=$(bzr log | head -n10 | grep revno | head -n1 | cut -d' ' -f2)
fi
# Pull their changes
if ! bzr merge $kernelteam ; then
echo "Merge failed! Please fix, and then 'exit 0' to continue..."
bash
fi
# Extract a diff of what they changed, relative to the merge point
diff=$(mktemp -t kernel-team-diff-XXXXXX)
bzr diff "-r$lastmerge" --new=$kernelteam >> "$diff" || true
if [ -s "$diff" ]; then
# Look it over
${EDITOR:-vi} "$diff"
fi
rm -f "$diff"
fi
}
process_missing_debian() {
echo "check-cves --import-missing-debian"
./scripts/check-cves --import-missing-debian
}
download_missing_redhat() {
tmpdir="$1"
archive="$2.txt"
fn="$tmpdir/$archive"
url="https://www.redhat.com/archives/rhsa-announce/$archive.gz"
echo "Downloading $url..."
# curl and wget fail with redhat's web proxy
w3m -dump_source "$url" > "$fn.gz"
echo "Unzipping $fn.gz..."
gzip -d "$fn.gz" || {
# This can happen at the start of a new month and RedHat has provided
# any advisories yet
echo "(skipping '$fn.gz')"
rm -f "$fn.gz"
return
}
echo "locate_cves.py $fn..."
./scripts/locate_cves.py "$fn" >> "$tmpdir/redhat.mbox"
}
process_missing_redhat() {
tmpdir=$(mktemp -d)
download_missing_redhat "$tmpdir" "$(date +%Y-%B)"
download_missing_redhat "$tmpdir" "$(date --date="$(date +%Y-%m-15) -1 month" +%Y-%B)"
./scripts/check-cves --untriaged "$tmpdir/redhat.mbox"
rm -rf "$tmpdir"
}
check_syntax() {
echo "Running check-syntax"
if ! ./scripts/check-syntax; then
cat <<EOM
*** IMPORTANT ***
There were check-syntax failures that need to be addressed. Please make the
appropriate modifications before checking in your work.
EOM
else
echo "No syntax issues found"
fi
}
nag_about_mailing_lists() {
cat <<EOM
*** IMPORTANT ***
Mitre and NVD are no longer updated in a timely fashion. Please review
oss-security, linux-distros, nd vendor mailing lists for any new CVEs after
doing triage. This script pulls in RHSAs on Wednesdays and DSAs daily.
Eg, to triage oss-security (assumes in the UCT directory):
<save last month to mbox file, ~/oss-sec.mbox>
$ ./scripts/check-cves --mbox ~/oss-sec.mbox
EOM
}
prev_dir=$(pwd)
trap "cd '$prev_dir'" EXIT HUP INT QUIT TERM
# Determine mode
action=$(LC_TIME=C date +%a)
if [ ! -z "$1" ]; then
action="$1"
fi
case "$action" in
Mon)
update_debian
update_files
# kernel_team_merge
echo "Skipping merge from kernel team"
echo "check-cves nvdcve-*.xml"
./scripts/check-cves nvdcve-*.xml
process_missing_debian
check_syntax
nag_about_mailing_lists
;;
Wed)
update_debian
update_files
# kernel_team_merge
echo "Skipping merge from kernel team"
# process new ones
echo "check-cves ./nvdcve-recent.xml"
./scripts/check-cves ./nvdcve-recent.xml
echo "check-cves ./allitems.xml"
./scripts/check-cves ./allitems.xml
process_missing_debian
process_missing_redhat
full_refresh
check_syntax
nag_about_mailing_lists
;;
redhat)
process_missing_redhat
;;
debian)
update_debian
process_missing_debian
;;
update)
# Do no triage
update_debian
update_files
;;
refresh)
# Do no triage
update_debian
update_files
full_refresh
;;
merge)
# Do no triage
update_debian
update_files
kernel_team_merge
;;
*)
update_debian
update_files
# kernel_team_merge
echo "Skipping merge from kernel team"
echo "check-cves ./nvdcve-recent.xml"
./scripts/check-cves ./nvdcve-recent.xml
process_missing_debian
check_syntax
nag_about_mailing_lists
;;
esac
exit 0
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