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openvpn: fix missing cipher list for polarssl in v2.3.11

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Upstream OpenSSL hardening work introduced a change in shared code that
causes polarssl / mbedtls builds to break when no --tls-cipher is specified.

Import the upstream fix commit as patch until the next OpenVPN release gets
released and packaged.

Reported-by: Sebastian Koch <seb@metafly.info>
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2016-06-28 10:47:22 +02:00
parent 4a3b8e0596
commit f98f4601de
2 changed files with 43 additions and 1 deletions
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2
package/network/services/openvpn/Makefile
View file

@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=openvpn
PKG_VERSION:=2.3.11
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE_URL:=http://swupdate.openvpn.net/community/releases
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz

42
package/network/services/openvpn/patches/300-upstream-fix-polarssl-mbedtls-builds.patch Normal file
View file

@ -0,0 +1,42 @@
From 629baad8f89af261445a2ace03694601f8e476f9 Mon Sep 17 00:00:00 2001
From: Steffan Karger <steffan@karger.me>
Date: Fri, 13 May 2016 08:54:52 +0200
Subject: [PATCH] Fix polarssl / mbedtls builds
Commit 8a399cd3 hardened the OpenSSL default cipher list,
but also introduced a change in shared code that causes
polarssl / mbedtls builds to break when no --tls-cipher is
specified.
This fix is backported code from the master branch.
Signed-off-by: Steffan Karger <steffan@karger.me>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <1463122492-701-1-git-send-email-steffan@karger.me>
URL: http://article.gmane.org/gmane.network.openvpn.devel/11647
Signed-off-by: Gert Doering <gert@greenie.muc.de>
---
src/openvpn/ssl_polarssl.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/openvpn/ssl_polarssl.c b/src/openvpn/ssl_polarssl.c
index 1f58369..9263698 100644
--- a/src/openvpn/ssl_polarssl.c
+++ b/src/openvpn/ssl_polarssl.c
@@ -176,7 +176,12 @@ tls_ctx_restrict_ciphers(struct tls_root_ctx *ctx, const char *ciphers)
{
char *tmp_ciphers, *tmp_ciphers_orig, *token;
int i, cipher_count;
- int ciphers_len = strlen (ciphers);
+ int ciphers_len;
+
+ if (NULL == ciphers)
+ return; /* Nothing to do */
+
+ ciphers_len = strlen (ciphers);
ASSERT (NULL != ctx);
ASSERT (0 != ciphers_len);
--
2.8.1