CPAN.pm before 2.35 does not verify TLS certificates when downloading distributions over HTTPS.
HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in to verify certificates. References: https://nvd.nist.gov/vuln/detail/CVE-2023-31484 https://nvd.nist.gov/vuln/detail/CVE-2023-31486 Upstream patches: https://github.com/andk/cpanpm/commit/9c98370287f4e709924aee7c58ef21c85289a7f0 https://github.com/chansen/p5-http-tiny/commit/77f557ef84698efeb6eed04e4a9704eaf85b741d https://github.com/chansen/p5-http-tiny/commit/a22785783b17cbaa28afaee4a024d81a1903701d Signed-off-by: Soumya <soumya.sa...@windriver.com> --- .../perl/files/CVE-2023-31484.patch | 29 +++ .../perl/files/CVE-2023-31486-0001.patch | 217 ++++++++++++++++++ .../perl/files/CVE-2023-31486-0002.patch | 30 +++ meta/recipes-devtools/perl/perl_5.36.0.bb | 3 + 4 files changed, 279 insertions(+) create mode 100644 meta/recipes-devtools/perl/files/CVE-2023-31484.patch create mode 100644 meta/recipes-devtools/perl/files/CVE-2023-31486-0001.patch create mode 100644 meta/recipes-devtools/perl/files/CVE-2023-31486-0002.patch diff --git a/meta/recipes-devtools/perl/files/CVE-2023-31484.patch b/meta/recipes-devtools/perl/files/CVE-2023-31484.patch new file mode 100644 index 0000000000..1f7cbd0da1 --- /dev/null +++ b/meta/recipes-devtools/perl/files/CVE-2023-31484.patch @@ -0,0 +1,29 @@ +From a625ec2cc3a0b6116c1f8b831d3480deb621c245 Mon Sep 17 00:00:00 2001 +From: Stig Palmquist <g...@stig.io> +Date: Tue, 28 Feb 2023 11:54:06 +0100 +Subject: [PATCH] Add verify_SSL=>1 to HTTP::Tiny to verify https server + identity + +Upstream-Status: Backport [https://github.com/andk/cpanpm/commit/9c98370287f4e709924aee7c58ef21c85289a7f0] + +CVE: CVE-2023-31484 + +Signed-off-by: Soumya <soumya.sa...@windriver.com> +--- + cpan/CPAN/lib/CPAN/HTTP/Client.pm | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/cpan/CPAN/lib/CPAN/HTTP/Client.pm b/cpan/CPAN/lib/CPAN/HTTP/Client.pm +index 4fc792c..a616fee 100644 +--- a/cpan/CPAN/lib/CPAN/HTTP/Client.pm ++++ b/cpan/CPAN/lib/CPAN/HTTP/Client.pm +@@ -32,6 +32,7 @@ sub mirror { + + my $want_proxy = $self->_want_proxy($uri); + my $http = HTTP::Tiny->new( ++ verify_SSL => 1, + $want_proxy ? (proxy => $self->{proxy}) : () + ); + +-- +2.40.0 diff --git a/meta/recipes-devtools/perl/files/CVE-2023-31486-0001.patch b/meta/recipes-devtools/perl/files/CVE-2023-31486-0001.patch new file mode 100644 index 0000000000..e2a2216a0d --- /dev/null +++ b/meta/recipes-devtools/perl/files/CVE-2023-31486-0001.patch @@ -0,0 +1,217 @@ +From e1ca8defeff496000fc96600ebfca7250065c1f1 Mon Sep 17 00:00:00 2001 +From: Stig Palmquist <g...@stig.io> +Date: Thu, 29 Jun 2023 14:36:05 +0000 +Subject: [PATCH] Change verify_SSL default to 1, add ENV var to enable + insecure default + +- Changes the `verify_SSL` default parameter from `0` to `1` + + Based on patch by Dominic Hargreaves: + https://salsa.debian.org/perl-team/interpreter/perl/-/commit/1490431e40e22052f75a0b3449f1f53cbd27ba92 + + Fixes CVE-2023-31486 + +- Add check for `$ENV{PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT}` that + enables the previous insecure default behaviour if set to `1`. + + This provides a workaround for users who encounter problems with the + new `verify_SSL` default. + + Example to disable certificate checks: + ``` + $ PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT=1 ./script.pl + ``` + +- Updates to documentation: + - Describe changing the verify_SSL value + - Describe the escape-hatch environment variable + - Remove rationale for not enabling verify_SSL + - Add missing certificate search paths + - Replace "SSL" with "TLS/SSL" where appropriate + - Use "machine-in-the-middle" instead of "man-in-the-middle" + +Upstream-Status: Backport [https://github.com/chansen/p5-http-tiny/commit/77f557ef84698efeb6eed04e4a9704eaf85b741d] + +Signed-off-by: Soumya <soumya.sa...@windriver.com> +--- + cpan/HTTP-Tiny/lib/HTTP/Tiny.pm | 86 ++++++++++++++++++++++----------- + 1 file changed, 57 insertions(+), 29 deletions(-) + +diff --git a/cpan/HTTP-Tiny/lib/HTTP/Tiny.pm b/cpan/HTTP-Tiny/lib/HTTP/Tiny.pm +index 83ca06d..5f6ced8 100644 +--- a/cpan/HTTP-Tiny/lib/HTTP/Tiny.pm ++++ b/cpan/HTTP-Tiny/lib/HTTP/Tiny.pm +@@ -40,10 +40,14 @@ sub _croak { require Carp; Carp::croak(@_) } + #pod * C<timeout> ??? Request timeout in seconds (default is 60) If a socket open, + #pod read or write takes longer than the timeout, the request response status code + #pod will be 599. +-#pod * C<verify_SSL> ??? A boolean that indicates whether to validate the SSL +-#pod certificate of an C<https> ??? connection (default is false) ++#pod * C<verify_SSL> ??? A boolean that indicates whether to validate the TLS/SSL ++#pod certificate of an C<https> ??? connection (default is true). Changed from false ++#pod to true in version 0.083. + #pod * C<SSL_options> ??? A hashref of C<SSL_*> ??? options to pass through to + #pod L<IO::Socket::SSL> ++#pod * C<$ENV{PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT}> - Changes the default ++#pod certificate verification behavior to not check server identity if set to 1. ++#pod Only effective if C<verify_SSL> is not set. Added in version 0.083. + #pod + #pod An accessor/mutator method exists for each attribute. + #pod +@@ -111,11 +115,17 @@ sub timeout { + sub new { + my($class, %args) = @_; + ++ # Support lower case verify_ssl argument, but only if verify_SSL is not ++ # true. ++ if ( exists $args{verify_ssl} ) { ++ $args{verify_SSL} ||= $args{verify_ssl}; ++ } ++ + my $self = { + max_redirect => 5, + timeout => defined $args{timeout} ? $args{timeout} : 60, + keep_alive => 1, +- verify_SSL => $args{verify_SSL} || $args{verify_ssl} || 0, # no verification by default ++ verify_SSL => defined $args{verify_SSL} ? $args{verify_SSL} : _verify_SSL_default(), + no_proxy => $ENV{no_proxy}, + }; + +@@ -134,6 +144,13 @@ sub new { + return $self; + } + ++sub _verify_SSL_default { ++ my ($self) = @_; ++ # Check if insecure default certificate verification behaviour has been ++ # changed by the user by setting PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT=1 ++ return (($ENV{PERL_HTTP_TINY_INSECURE_BY_DEFAULT} || '') eq '1') ? 0 : 1; ++} ++ + sub _set_proxies { + my ($self) = @_; + +@@ -1055,7 +1072,7 @@ sub new { + timeout => 60, + max_line_size => 16384, + max_header_lines => 64, +- verify_SSL => 0, ++ verify_SSL => HTTP::Tiny::_verify_SSL_default(), + SSL_options => {}, + %args + }, $class; +@@ -2043,11 +2060,11 @@ proxy + timeout + verify_SSL + +-=head1 SSL SUPPORT ++=head1 TLS/SSL SUPPORT + + Direct C<https> connections are supported only if L<IO::Socket::SSL> 1.56 or + greater and L<Net::SSLeay> 1.49 or greater are installed. An error will occur +-if new enough versions of these modules are not installed or if the SSL ++if new enough versions of these modules are not installed or if the TLS + encryption fails. You can also use C<HTTP::Tiny::can_ssl()> utility function + that returns boolean to see if the required modules are installed. + +@@ -2055,7 +2072,7 @@ An C<https> connection may be made via an C<http> proxy that supports the CONNEC + command (i.e. RFC 2817). You may not proxy C<https> via a proxy that itself + requires C<https> to communicate. + +-SSL provides two distinct capabilities: ++TLS/SSL provides two distinct capabilities: + + =over 4 + +@@ -2069,24 +2086,17 @@ Verification of server identity + + =back + +-B<By default, HTTP::Tiny does not verify server identity>. +- +-Server identity verification is controversial and potentially tricky because it +-depends on a (usually paid) third-party Certificate Authority (CA) trust model +-to validate a certificate as legitimate. This discriminates against servers +-with self-signed certificates or certificates signed by free, community-driven +-CA's such as L<CAcert.org|http://cacert.org>. ++B<By default, HTTP::Tiny verifies server identity>. + +-By default, HTTP::Tiny does not make any assumptions about your trust model, +-threat level or risk tolerance. It just aims to give you an encrypted channel +-when you need one. ++This was changed in version 0.083 due to security concerns. The previous default ++behavior can be enabled by setting C<$ENV{PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT}> ++to 1. + +-Setting the C<verify_SSL> attribute to a true value will make HTTP::Tiny verify +-that an SSL connection has a valid SSL certificate corresponding to the host +-name of the connection and that the SSL certificate has been verified by a CA. +-Assuming you trust the CA, this will protect against a L<man-in-the-middle +-attack|http://en.wikipedia.org/wiki/Man-in-the-middle_attack>. If you are +-concerned about security, you should enable this option. ++Verification is done by checking that that the TLS/SSL connection has a valid ++certificate corresponding to the host name of the connection and that the ++certificate has been verified by a CA. Assuming you trust the CA, this will ++protect against L<machine-in-the-middle ++attacks|http://en.wikipedia.org/wiki/Machine-in-the-middle_attack>. + + Certificate verification requires a file containing trusted CA certificates. + +@@ -2094,9 +2104,7 @@ If the environment variable C<SSL_CERT_FILE> is present, HTTP::Tiny + will try to find a CA certificate file in that location. + + If the L<Mozilla::CA> module is installed, HTTP::Tiny will use the CA file +-included with it as a source of trusted CA's. (This means you trust Mozilla, +-the author of Mozilla::CA, the CPAN mirror where you got Mozilla::CA, the +-toolchain used to install it, and your operating system security, right?) ++included with it as a source of trusted CA's. + + If that module is not available, then HTTP::Tiny will search several + system-specific default locations for a CA certificate file: +@@ -2115,13 +2123,33 @@ system-specific default locations for a CA certificate file: + + /etc/ssl/ca-bundle.pem + ++=item * ++ ++/etc/openssl/certs/ca-certificates.crt ++ ++=item * ++ ++/etc/ssl/cert.pem ++ ++=item * ++ ++/usr/local/share/certs/ca-root-nss.crt ++ ++=item * ++ ++/etc/pki/tls/cacert.pem ++ ++=item * ++ ++/etc/certs/ca-certificates.crt ++ + =back + + An error will be occur if C<verify_SSL> is true and no CA certificate file + is available. + +-If you desire complete control over SSL connections, the C<SSL_options> attribute +-lets you provide a hash reference that will be passed through to ++If you desire complete control over TLS/SSL connections, the C<SSL_options> ++attribute lets you provide a hash reference that will be passed through to + C<IO::Socket::SSL::start_SSL()>, overriding any options set by HTTP::Tiny. For + example, to provide your own trusted CA file: + +@@ -2131,7 +2159,7 @@ example, to provide your own trusted CA file: + + The C<SSL_options> attribute could also be used for such things as providing a + client certificate for authentication to a server or controlling the choice of +-cipher used for the SSL connection. See L<IO::Socket::SSL> documentation for ++cipher used for the TLS/SSL connection. See L<IO::Socket::SSL> documentation for + details. + + =head1 PROXY SUPPORT +-- +2.40.0 diff --git a/meta/recipes-devtools/perl/files/CVE-2023-31486-0002.patch b/meta/recipes-devtools/perl/files/CVE-2023-31486-0002.patch new file mode 100644 index 0000000000..e41e140cf9 --- /dev/null +++ b/meta/recipes-devtools/perl/files/CVE-2023-31486-0002.patch @@ -0,0 +1,30 @@ +commit a22785783b17cbaa28afaee4a024d81a1903701d +From: Stig Palmquist <g...@stig.io> +Date: Sun Jun 18 11:36:05 2023 +0200 + + Fix incorrect env var name for verify_SSL default + + The variable to override the verify_SSL default differed slightly in the + documentation from what was checked for in the code. + + This commit makes the code use `PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT` + as documented, instead of `PERL_HTTP_TINY_INSECURE_BY_DEFAULT` which was + missing `SSL_` + +Upstream-Status: Backport [https://github.com/chansen/p5-http-tiny/commit/a22785783b17cbaa28afaee4a024d81a1903701d] + +Signed-off-by: Soumya <soumya.sa...@windriver.com> +--- +diff --git a/lib/HTTP/Tiny.pm b/lib/HTTP/Tiny.pm +index bf455b6..7240b65 100644 +--- a/cpan/HTTP-Tiny/lib/HTTP/Tiny.pm ++++ b/cpan/HTTP-Tiny/lib/HTTP/Tiny.pm +@@ -149,7 +149,7 @@ sub _verify_SSL_default { + my ($self) = @_; + # Check if insecure default certificate verification behaviour has been + # changed by the user by setting PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT=1 +- return (($ENV{PERL_HTTP_TINY_INSECURE_BY_DEFAULT} || '') eq '1') ? 0 : 1; ++ return (($ENV{PERL_HTTP_TINY_SSL_INSECURE_BY_DEFAULT} || '') eq '1') ? 0 : 1; + } + + sub _set_proxies { diff --git a/meta/recipes-devtools/perl/perl_5.36.0.bb b/meta/recipes-devtools/perl/perl_5.36.0.bb index b8dba00f18..c3ca28ed23 100644 --- a/meta/recipes-devtools/perl/perl_5.36.0.bb +++ b/meta/recipes-devtools/perl/perl_5.36.0.bb @@ -18,6 +18,9 @@ SRC_URI = "https://www.cpan.org/src/5.0/perl-${PV}.tar.gz;name=perl \ file://determinism.patch \ file://0001-cpan-Sys-Syslog-Makefile.PL-Fix-_PATH_LOG-for-determ.patch \ file://0001-Fix-build-with-gcc-12.patch \ + file://CVE-2023-31484.patch \ + file://CVE-2023-31486-0001.patch \ + file://CVE-2023-31486-0002.patch \ " SRC_URI:append:class-native = " \ file://perl-configpm-switch.patch \ -- 2.40.0
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