Add missing bounds check in X509 DER write funcs
This patch adds checks in both mbedtls_x509write_crt_der and
mbedtls_x509write_csr_der before the signature is written to buf
using memcpy().
diff --git a/ChangeLog b/ChangeLog
index e64b8c2..29d806a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,12 @@
mbed TLS ChangeLog (Sorted per branch, date)
-= mbed TLS 1.3.x
+= mbed TLS 1.3.x branch 2016-xx-xx
+
+Security
+ * Fix potential stack corruption in mbedtls_x509write_crt_der() and
+ mbedtls_x509write_csr_der() when the signature is copied to the buffer
+ without checking whether there is enough space in the destination. It is
+ not triggerable remotely in SSL/TLS.
Bugfix
* Fix an issue that caused valid certificates being rejected whenever an