diff options
Diffstat (limited to 'meta/recipes-connectivity/openssl/openssl-1.0.1e/0001-Fix-DTLS-retransmission-from-previous-session.patch')
| -rw-r--r-- | meta/recipes-connectivity/openssl/openssl-1.0.1e/0001-Fix-DTLS-retransmission-from-previous-session.patch | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/openssl/openssl-1.0.1e/0001-Fix-DTLS-retransmission-from-previous-session.patch b/meta/recipes-connectivity/openssl/openssl-1.0.1e/0001-Fix-DTLS-retransmission-from-previous-session.patch new file mode 100644 index 0000000000..39592e2d67 --- /dev/null +++ b/meta/recipes-connectivity/openssl/openssl-1.0.1e/0001-Fix-DTLS-retransmission-from-previous-session.patch @@ -0,0 +1,81 @@ +From 34628967f1e65dc8f34e000f0f5518e21afbfc7b Mon Sep 17 00:00:00 2001 +From: "Dr. Stephen Henson" <steve@openssl.org> +Date: Fri, 20 Dec 2013 15:26:50 +0000 +Subject: [PATCH] Fix DTLS retransmission from previous session. + +Upstream-Status: Backport +commit 34628967f1e65dc8f34e000f0f5518e21afbfc7b upstream + +For DTLS we might need to retransmit messages from the previous session +so keep a copy of write context in DTLS retransmission buffers instead +of replacing it after sending CCS. CVE-2013-6450. +--- + ssl/d1_both.c | 6 ++++++ + ssl/ssl_locl.h | 2 ++ + ssl/t1_enc.c | 17 +++++++++++------ + 4 files changed, 24 insertions(+), 6 deletions(-) + +diff --git a/ssl/d1_both.c b/ssl/d1_both.c +index 65ec001..7a5596a 100644 +--- a/ssl/d1_both.c ++++ b/ssl/d1_both.c +@@ -214,6 +214,12 @@ dtls1_hm_fragment_new(unsigned long frag_len, int reassembly) + static void + dtls1_hm_fragment_free(hm_fragment *frag) + { ++ ++ if (frag->msg_header.is_ccs) ++ { ++ EVP_CIPHER_CTX_free(frag->msg_header.saved_retransmit_state.enc_write_ctx); ++ EVP_MD_CTX_destroy(frag->msg_header.saved_retransmit_state.write_hash); ++ } + if (frag->fragment) OPENSSL_free(frag->fragment); + if (frag->reassembly) OPENSSL_free(frag->reassembly); + OPENSSL_free(frag); +diff --git a/ssl/ssl_locl.h b/ssl/ssl_locl.h +index 96ce9a7..e485907 100644 +--- a/ssl/ssl_locl.h ++++ b/ssl/ssl_locl.h +@@ -621,6 +621,8 @@ extern SSL3_ENC_METHOD TLSv1_enc_data; + extern SSL3_ENC_METHOD SSLv3_enc_data; + extern SSL3_ENC_METHOD DTLSv1_enc_data; + ++#define SSL_IS_DTLS(s) (s->method->version == DTLS1_VERSION) ++ + #define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \ + s_get_meth) \ + const SSL_METHOD *func_name(void) \ +diff --git a/ssl/t1_enc.c b/ssl/t1_enc.c +index 72015f5..56db834 100644 +--- a/ssl/t1_enc.c ++++ b/ssl/t1_enc.c +@@ -414,15 +414,20 @@ int tls1_change_cipher_state(SSL *s, int which) + s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; + else + s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; +- if (s->enc_write_ctx != NULL) ++ if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) + reuse_dd = 1; +- else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL) ++ else if ((s->enc_write_ctx=EVP_CIPHER_CTX_new()) == NULL) + goto err; +- else +- /* make sure it's intialized in case we exit later with an error */ +- EVP_CIPHER_CTX_init(s->enc_write_ctx); + dd= s->enc_write_ctx; +- mac_ctx = ssl_replace_hash(&s->write_hash,NULL); ++ if (SSL_IS_DTLS(s)) ++ { ++ mac_ctx = EVP_MD_CTX_create(); ++ if (!mac_ctx) ++ goto err; ++ s->write_hash = mac_ctx; ++ } ++ else ++ mac_ctx = ssl_replace_hash(&s->write_hash,NULL); + #ifndef OPENSSL_NO_COMP + if (s->compress != NULL) + { +-- +1.7.5.4 + |