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scripts: always check certificates

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Remove flags from wget and curl instructing them to ignore bad server
certificates. Although other mechanisms can protect against malicious
modifications of downloads, other vectors of attack may be available
to an adversary.

TLS certificate verification can be disabled by turning oof the
"Enable TLS certificate verification during package download" option
enabled by default in the "Global build settings" in "make menuconfig"

Signed-off-by: Josh Roys <roysjosh@gmail.com>
[ add additional info on how to disable this option ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Josh Roys
2022-07-23 11:23:16 -04:00
committed by Christian Marangi
parent f522c27385
commit 90c6e3aedf
3 changed files with 11 additions and 2 deletions
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6
scripts/download.pl
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@@ -24,6 +24,8 @@ my $scriptdir = dirname($0);
my @mirrors;
my $ok;
my $check_certificate = $ENV{DOWNLOAD_CHECK_CERTIFICATE} eq "y";
$url_filename or $url_filename = $filename;
sub localmirrors {
@@ -80,8 +82,8 @@ sub download_cmd($) {
}
return $have_curl
? (qw(curl -f --connect-timeout 20 --retry 5 --location --insecure), shellwords($ENV{CURL_OPTIONS} || ''), $url)
: (qw(wget --tries=5 --timeout=20 --no-check-certificate --output-document=-), shellwords($ENV{WGET_OPTIONS} || ''), $url)
? (qw(curl -f --connect-timeout 20 --retry 5 --location), $check_certificate ? '' : '--insecure', shellwords($ENV{CURL_OPTIONS} || ''), $url)
: (qw(wget --tries=5 --timeout=20 --output-document=-), $check_certificate ? '' : '--no-check-certificate', shellwords($ENV{WGET_OPTIONS} || ''), $url)
;
}