>From the OpenSSL Security Advisory [05 Jun 2014]
http://www.openssl.org/news/secadv_20140605.txt
DTLS recursion flaw (CVE-2014-0221)
By sending an invalid DTLS handshake to an OpenSSL DTLS client the code
can be made to recurse eventually crashing in a DoS attack.
Only applications using OpenSSL as a DTLS client are affected.
(Patch borrowed from Fedora.)
Signed-off-by: Paul Eggleton <paul.eggle...@linux.intel.com>
---
.../openssl/openssl-1.0.1e-cve-2014-0221.patch | 38 ++++++++++++++++++++++
.../recipes-connectivity/openssl/openssl_1.0.1g.bb | 1 +
2 files changed, 39 insertions(+)
create mode 100644
meta/recipes-connectivity/openssl/openssl/openssl-1.0.1e-cve-2014-0221.patch
diff --git
a/meta/recipes-connectivity/openssl/openssl/openssl-1.0.1e-cve-2014-0221.patch
b/meta/recipes-connectivity/openssl/openssl/openssl-1.0.1e-cve-2014-0221.patch
new file mode 100644
index 0000000..bf730a8
--- /dev/null
+++
b/meta/recipes-connectivity/openssl/openssl/openssl-1.0.1e-cve-2014-0221.patch
@@ -0,0 +1,38 @@
+commit d30e582446b027868cdabd0994681643682045a4
+Author: Dr. Stephen Henson <st...@openssl.org>
+Date: Fri May 16 13:00:45 2014 +0100
+
+ Fix CVE-2014-0221
+
+ Unnecessary recursion when receiving a DTLS hello request can be used to
+ crash a DTLS client. Fixed by handling DTLS hello request without
recursion.
+
+ Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
+
+Patch borrowed from Fedora
+Upstream-Status: Backport
+Signed-off-by: Paul Eggleton <paul.eggle...@linux.intel.com>
+
+diff --git a/ssl/d1_both.c b/ssl/d1_both.c
+index 07f67f8..4c2fd03 100644
+--- a/ssl/d1_both.c
++++ b/ssl/d1_both.c
+@@ -793,6 +793,7 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long
max, int *ok)
+ int i,al;
+ struct hm_header_st msg_hdr;
+
++ redo:
+ /* see if we have the required fragment already */
+ if ((frag_len = dtls1_retrieve_buffered_fragment(s,max,ok)) || *ok)
+ {
+@@ -851,8 +852,7 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long
max, int *ok)
+ s->msg_callback_arg);
+
+ s->init_num = 0;
+- return dtls1_get_message_fragment(s, st1, stn,
+- max, ok);
++ goto redo;
+ }
+ else /* Incorrectly formated Hello request */
+ {
+
diff --git a/meta/recipes-connectivity/openssl/openssl_1.0.1g.bb
b/meta/recipes-connectivity/openssl/openssl_1.0.1g.bb
index 18f0baf..d4084de 100644
--- a/meta/recipes-connectivity/openssl/openssl_1.0.1g.bb
+++ b/meta/recipes-connectivity/openssl/openssl_1.0.1g.bb
@@ -36,6 +36,7 @@ SRC_URI += "file://configure-targets.patch \
file://openssl-fix-des.pod-error.patch \
file://openssl-1.0.1e-cve-2014-0195.patch \
file://openssl-1.0.1e-cve-2014-0198.patch \
+ file://openssl-1.0.1e-cve-2014-0221.patch \
file://openssl-CVE-2010-5298.patch \
"
--
1.9.3
--
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