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From 9a0188335ea83a5e0078d21624e8bb134ef21687 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
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Date: Thu, 24 Apr 2014 15:51:01 +0200
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Subject: [PATCH 1/2] Do not set SSL_ciphers to ALL by default
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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'ALL' cipher list is not the same as OpenSSL default. The 'ALL'
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contains more ciphers. Some of them are too weak, some of them
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prevents from using SSLv3 protocol. Then used SSLv2 protocol does not
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support elliptic curve parameter negotion which can cause
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interoperability issues when server picks a curve not supported by the
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client.
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IO-Socket-SSL-1.955 supports special value '' (empty string) to
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designed the OpenSSL default. However older IO-Socket-SSL recommends
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not to set the option at all.
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Thus this patch sets SSL_ciphers only if Net::LDAP application passes
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the ciphers option.
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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lib/Net/LDAP.pm | 3 ++-
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lib/Net/LDAP.pod | 4 ++--
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2 files changed, 4 insertions(+), 3 deletions(-)
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diff --git a/lib/Net/LDAP.pm b/lib/Net/LDAP.pm
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index 03eb23f..99d227a 100644
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--- a/lib/Net/LDAP.pm
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+++ b/lib/Net/LDAP.pm
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@@ -243,7 +243,8 @@ sub _SSL_context_init_args {
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}
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(
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- SSL_cipher_list => defined $arg->{ciphers} ? $arg->{ciphers} : 'ALL',
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+ defined $arg->{ciphers} ?
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+ ( SSL_cipher_list => defined $arg->{ciphers}) : (),
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SSL_ca_file => exists $arg->{cafile} ? $arg->{cafile} : '',
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SSL_ca_path => exists $arg->{capath} ? $arg->{capath} : '',
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SSL_key_file => $clientcert ? $clientkey : undef,
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diff --git a/lib/Net/LDAP.pod b/lib/Net/LDAP.pod
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index 77a8400..c35508a 100644
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--- a/lib/Net/LDAP.pod
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+++ b/lib/Net/LDAP.pod
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@@ -779,8 +779,8 @@ B<'tlsv1'>.
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Specify which subset of cipher suites are permissible for this
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connection, using the standard OpenSSL string format. The default
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-value is B<'ALL'>, which permits all ciphers, even those that don't
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-encrypt.
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+behavior is to keep the decision on the underlying cryptographic
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+library.
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=item clientcert =E<gt> '/path/to/cert.pem'
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--
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1.9.3
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