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authorJack Lloyd <[email protected]>2019-05-23 15:30:19 -0400
committerJack Lloyd <[email protected]>2019-05-23 15:56:27 -0400
commitff09135c0fa7910bf59850b0c9fbd9321242e42d (patch)
tree769675ba149ef1d9ad6641b4ecacf36c61fb0212 /src/lib/tls
parent0c4f391625366a77f92cabd5cb0b4f3e0f965077 (diff)
Verify contents of DTLS CCS message
Diffstat (limited to 'src/lib/tls')
-rw-r--r--src/lib/tls/tls_handshake_io.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/lib/tls/tls_handshake_io.cpp b/src/lib/tls/tls_handshake_io.cpp
index afab1dd20..8834e0008 100644
--- a/src/lib/tls/tls_handshake_io.cpp
+++ b/src/lib/tls/tls_handshake_io.cpp
@@ -189,6 +189,9 @@ void Datagram_Handshake_IO::add_record(const std::vector<uint8_t>& record,
if(record_type == CHANGE_CIPHER_SPEC)
{
+ if(record.size() != 1 || record[0] != 1)
+ throw Decoding_Error("Invalid ChangeCipherSpec");
+
// TODO: check this is otherwise empty
m_ccs_epochs.insert(epoch);
return;