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|
#!/usr/bin/perl
# Must run on a machine with dak ls.
#
# To check for un-updated binary kernel packages, also needs grep-dctrl
# and a Sources file for the distribution. Set the location of the Sources
# file in SOURCES_FILE in the environment.
use warnings;
use strict;
use URI::Escape;
use Getopt::Long;
my $html=0;
my $debug=0;
my $suite="testing";
my $sta="http://security.debian.org/debian-security/dists/testing/updates/main/source/Sources.gz";
my $output;
if (! GetOptions(
"html" => \$html,
"debug" => \$debug,
"suite=s" => \$suite,
"sta=s" => \$sta,
"output=s", \$output)
|| ! @ARGV) {
die "usage: $0 [--suite suite] [--sta sta-mirror] [--html] [--output=file] [--debug] list ...\n";
}
my $stasources=`tempfile`;
chomp $stasources;
system("wget -q -O $stasources $sta");
if (defined $output) {
open (OUT, ">$output.tmp.$$") || die "output.tmp.$$: $!"; # Set the output to a file
}
else {
open (OUT, ">&STDOUT"); # Set the output to stdout
}
if ($html) { # It's HTML, so we need a header
print OUT "<html><title>$suite security issues</title>\n";
print OUT <<"EOF";
<p><b>Note:</b>The information in the <a href="http://idssi.enyo.de/tracker">Security
Bug Tracker</a> is more detailed and likely more accurate.
</p>
EOF
# This is being run against something it's not meant to be, so print a warning
if ($suite ne 'testing' && $suite ne 'unstable') {
print OUT <<"EOF";
<p>
<em>Warning:</em> This page is the result of running the testing security
check script against the $suite distribution. As data is only gathered for
the testing distribution, results may be innacurate if a package has
changed its name, if a vulnerability affects $suite and not testing, or if a
vulnerability has been fixed in $suite by the security team.
</p>
EOF
}
print OUT "<ul>\n";
}
my %data;
my %advlist;
my %needkernel=qw/2.4.27 0 2.6.11 0/;
my $list_unknown=1; #set to 1 to display kernel images with unknown source version
my $sources=$ENV{SOURCES_FILE};
my $need_rebuild=0;
# Set some colours for the urgency types
my @urgencies=("high", "medium", "low", "unimportant", "unknown", "fixed");
my %colormap=(
high => "#FF0000",
medium => "#FF9999",
low => "#FFFFFF",
unknown => "#FFFF00",
fixed => "#00FF00",
);
my $unprop = my $unprop_all = my $unfixed = my $todos = my $fixedsta = 0;
# Add an item into the data array.
sub record {
my ($package, $condition, $item, $urgency)=@_;
if (! defined $item) {
$item='';
}
if ($html) {
$condition=~s{bug #(\d+)}{<a href="http://bugs.debian.org/$1">bug #$1</a>}g;
$condition=~s{unfixed}{<b>unfixed</b>}g;
$item=~s#(CVE-\d+-\d+)#<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=$1">$1</a>#g;
$item=~s#(DTSA-\d+-\d+)#<a href="http://testing-security.debian.net/DTSA/$1.html">$1</a>#g;
}
push @{$data{$package}{$condition}}, {item => $item, urgency => $urgency};
}
foreach my $list (@ARGV) {
# Each of the @ARGVs we've got passed need parsing. So lets do that
# If it's a directory, set the file to list, cause we need that.
if (-d $list) {
$list="$list/list";
}
my $id;
open (IN, $list) || die "open $list: $!";
while (<IN>) {
print STDERR "line: $_" if $debug;
chomp;
if (/\s+TODO/) { # It's a todo item. Add it to the count, and ignore it
$todos++;
}
elsif (/^\[/) { # Checking adv. number for a line starting with [ : Set $id to it
($id)=m/((?:DSA|DTSA|CVE)-[^\s]+) /;
}
elsif (/^((?:DSA|DTSA|CVE)-[^\s]+)/) { # Check for a line with an advisory at the start : Set $id to it
$id=$1;
}
elsif (/^\s+\[\w+\]\s+/) { # line tagged with a debian codename
next; # don't handle these for now
}
elsif (/^\s+(?:\[\w+\]\s+)?[!-]\s+(\S+)\s+(.*?)\s*$/) { # Deal with the rest of the lines
my $package=$1; # We know which package it is.
my $rest=$2;
my $version;
my $notes;
if ($rest=~/([^\(\s]+)\s+\((.*)\)/) {
$version=$1;
$notes=$2;
}
elsif ($rest=~/\((.*)\)/) {
$version="";
$notes=$1;
}
else {
$version=$rest;
$notes="";
}
# by now, we also have the version that's affected by the security problem.
# This is stored in $version
next if $version eq '<not-affected>' || $version eq '<removed>' || $version eq '<no-dsa>';
my @notes=split(/\s*;\s+/, $notes);
# Fetch the urgency, if we can.
my $urgency="unknown";
foreach my $u (@urgencies) {
if (grep { $_ eq $u } @notes) {
$urgency=$u;
@notes = grep { $_ ne $u } @notes;
last;
}
}
next if $urgency eq 'unimportant';
# It's a kernel. Add it to the list of kernels that need to be looked at.
if ($package=~/kernel-source-([0-9.]+)/ && $version ne '<unfixed>') {
my $kernversion=$1;
if (exists $needkernel{$kernversion} &&
length $version &&
system("dpkg --compare-versions $needkernel{$kernversion} lt $version") != 0) {
$needkernel{$kernversion}=$version;
}
}
# Fire up dak ls.
my @maddy;
for (1..5) {
@maddy=`dak ls -s '$suite' '$package'`;
if ($? & 127 || ($? >> 8 != 0 && $? >> 8 != 1)) {
# good old unrelaible newraff,
# home of our archive..
next;
}
last;
}
if ($? & 127) {
record($package, "<em>[dak ls segfaulted 5 times in a row.. Medic!]</em>", $id);
}
elsif ($? >> 8 != 0 && $? >> 8 != 1) {
record($package, "<em>[dak ls exited with ".($? >> 8)."]</em>", $id);
}
if (! @maddy) {
next;
}
if ($version eq '<unfixed>' || grep { $_ eq 'pending' } @notes) {
record($package, '('.join("; ", "unfixed", @notes).')', $id, $urgency);
$unfixed++;
# It's not been fixed!
}
else {
foreach my $maddy (@maddy) {
my @fields = split(/\s*\|\s*/, $maddy);
my $havver=$fields[1]; # It's this version in the archive I'm checking.
my $arches=$fields[3];
$version=~s/\s+//; # strip whitespace
$arches=~s/\s+$//;
next if $arches eq 'hurd-i386';
# Is the version in the archive the same or newer than the fix?
my $cmp=system("dpkg --compare-versions '$havver' '>=' '$version'");
if ($cmp != 0){ # No, so the archive is vulnerable.
# Does the version exist in the secure-testing archive?
my $staversion = `zcat $stasources |grep-dctrl -F Package -e ^$package\$ -s Version -`;
chomp $staversion;
$staversion=~s/Version: //;
$staversion=~s/\s+//;
if (length ($staversion)) {
# Yes, but what version is in s-t?
my $stacmp = system("dpkg --compare-versions '$staversion' '>=' '$version'");
if ($stacmp == 0){
# Well, the version in the s-t archive fixes the issue
# but it's still vulnerable in the main archive
$urgency='fixed';
$fixedsta++;
}
}
if ($html && $suite eq 'testing') {
$havver='<a href="http://bjorn.haxx.se/debian/testing.pl?package='.uri_escape($package).'">'.$havver.'</a>';
}
record($package, "$version needed, have $havver".(@maddy > 1 ? " [$arches]" : ""), $id, $urgency);
$unprop++;
$unprop_all++ unless @maddy > 1;
}
}
}
}
}
}
foreach my $package (sort keys %data) {
foreach my $condition (sort keys %{$data{$package}}) {
print OUT "<li>" if $html;
print OUT "$package $condition for ";
my $items=0;
foreach my $i (sort @{$data{$package}{$condition}}) {
print OUT ", " if $items > 0;
if ($html) {
my $color=$colormap{$i->{urgency}};
print OUT "<span style=\"background:$color\">";
}
print OUT $i->{item};
if ($html) {
print OUT "</span>";
}
$items++;
}
print OUT "\n";
}
}
my %needkern;
foreach my $version (sort keys %needkernel) {
my %images;
if (defined $needkern{$version} && $needkern{$version} eq "0") {
next;
}
my @dctrl;
if (defined $sources && length $sources) {
my $cat=($sources=~/\.gz/) ? "zcat" : "cat";
@dctrl=`$cat $sources | grep-dctrl -F Binary kernel-image-$version -s Package,Build-Depends -`;
}
my $package="";
my $haveversion;
foreach my $line (@dctrl) {
chomp $line;
if ($line=~/Package:\s*(\S+)/) {
$package=$1;
$haveversion="0";
} elsif ($line=~/Build-Depends/) {
if ($line=~/kernel-tree-$version-([^,\s]+)/) {
$haveversion="$version-$1";
} elsif ($line=~/kernel-source-$version\s+\(>?=\s*([^\s\)]+)\)/) {
$haveversion="$1";
}
} else {
if ($package=~/linux-kernel-di/ || $package eq "") {
next;
}
$images{$package}=$haveversion;
$package="";
}
}
foreach my $package (sort keys %images) {
if ($images{$package} eq "0") {
print OUT "<li>" if ($html && $list_unknown);
print OUT "$package built from kernel-source-$version $needkernel{$version} needed, current version unknown\n" if $list_unknown;
} elsif (!system("dpkg --compare-versions $needkernel{$version} gt $images{$package}")) {
print OUT "<li>" if $html;
print OUT "$package built from kernel-source-$version $needkernel{$version} needed, have $images{$package}\n";
$need_rebuild++;
}
}
}
if ($html) {
print OUT "</ul>\n";
print OUT "<hr>\n";
print OUT "Key: ";
foreach my $keyline (@urgencies) {
next if $keyline eq 'unimportant';
print OUT "<span style=\"border: 1px dashed; background:".$colormap{$keyline}."\"> $keyline </span> ";
}
print OUT "<br>";
print OUT "Total holes unfixed: $unfixed<br>\n";
print OUT "Total holes fixed in unstable (or experimental) but not $suite: $unprop_all ($fixedsta fixed in secure-testing archive)";
if ($unprop_all != $unprop) {
print OUT " (+".($unprop - $unprop_all)." on some arches)";
}
print OUT "<br>\n";
print OUT "Total number of kernel image packages not up to date: $need_rebuild<br>\n";
print OUT "Number of TODO lines in <a href=\"http://svn.debian.org/wsvn/secure-testing/data/?rev=0&sc=0\">records</a>: $todos<br>\n";
print OUT "Maintained by the <a href=\"http://testing-security.debian.net/\">testing security team</a><br>\n";
print OUT "Last update: ".`date`."<br>\n";
print OUT "</html>\n";
}
close OUT;
if (defined $output) {
rename("$output.tmp.$$", $output) || die "rename: $!";
}
unlink $stasources;
|
