From 299de5ea53446bc211e6aadf158d6ef7576384ab Mon Sep 17 00:00:00 2001 From: Paul Eggleton Date: Mon, 9 Jun 2014 11:29:30 +0100 Subject: openssl: fix CVE-2014-3470 From the OpenSSL Security Advisory [05 Jun 2014] http://www.openssl.org/news/secadv_20140605.txt Anonymous ECDH denial of service (CVE-2014-3470) OpenSSL TLS clients enabling anonymous ECDH ciphersuites are subject to a denial of service attack. (Patch borrowed from Fedora.) Signed-off-by: Paul Eggleton --- .../openssl-1.0.1e-cve-2014-3470.patch | 31 ++++++++++++++++++++++ .../recipes-connectivity/openssl/openssl_1.0.1e.bb | 1 + 2 files changed, 32 insertions(+) create mode 100644 meta/recipes-connectivity/openssl/openssl-1.0.1e/openssl-1.0.1e-cve-2014-3470.patch diff --git a/meta/recipes-connectivity/openssl/openssl-1.0.1e/openssl-1.0.1e-cve-2014-3470.patch b/meta/recipes-connectivity/openssl/openssl-1.0.1e/openssl-1.0.1e-cve-2014-3470.patch new file mode 100644 index 0000000000..025727f587 --- /dev/null +++ b/meta/recipes-connectivity/openssl/openssl-1.0.1e/openssl-1.0.1e-cve-2014-3470.patch @@ -0,0 +1,31 @@ +commit 4ad43d511f6cf064c66eb4bfd0fb0919b5dd8a86 +Author: Dr. Stephen Henson +Date: Thu May 29 15:00:05 2014 +0100 + + Fix CVE-2014-3470 + + Check session_cert is not NULL before dereferencing it. + +Patch borrowed from Fedora +Upstream-Status: Backport +Signed-off-by: Paul Eggleton + + +diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c +index d35376d..4324f8d 100644 +--- a/ssl/s3_clnt.c ++++ b/ssl/s3_clnt.c +@@ -2511,6 +2511,13 @@ int ssl3_send_client_key_exchange(SSL *s) + int ecdh_clnt_cert = 0; + int field_size = 0; + ++ if (s->session->sess_cert == NULL) ++ { ++ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); ++ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); ++ goto err; ++ } ++ + /* Did we send out the client's + * ECDH share for use in premaster + * computation as part of client certificate? diff --git a/meta/recipes-connectivity/openssl/openssl_1.0.1e.bb b/meta/recipes-connectivity/openssl/openssl_1.0.1e.bb index 1de9d3cc56..279a4fb385 100644 --- a/meta/recipes-connectivity/openssl/openssl_1.0.1e.bb +++ b/meta/recipes-connectivity/openssl/openssl_1.0.1e.bb @@ -40,6 +40,7 @@ SRC_URI += "file://configure-targets.patch \ file://openssl-1.0.1e-cve-2014-0198.patch \ file://openssl-1.0.1e-cve-2014-0221.patch \ file://openssl-1.0.1e-cve-2014-0224.patch \ + file://openssl-1.0.1e-cve-2014-3470.patch \ " SRC_URI[md5sum] = "66bf6f10f060d561929de96f9dfe5b8c" -- cgit 1.2.3-korg