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2d3881cc2e
If junk data is received during SSL_accept(), cyassl will treat it as legacy SSLv2 record without performing further plausibility checks. Change the legacy code path to return UNKNOWN_HANDSHAKE_TYPE if the value of the third byte isn't 0x01 the hello message type. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33675 3c298f89-4303-0410-b956-a3cf2f4a3e73
14 lines
545 B
Diff
14 lines
545 B
Diff
--- a/src/cyassl_int.c
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+++ b/src/cyassl_int.c
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@@ -1588,6 +1588,10 @@
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b1 =
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ssl->buffers.inputBuffer.buffer[ssl->buffers.inputBuffer.idx++];
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ssl->curSize = ((b0 & 0x7f) << 8) | b1;
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+
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+ /* does not appear to a be a SSLv2 client hello */
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+ if ( ssl->buffers.inputBuffer.buffer[ssl->buffers.inputBuffer.idx] != 1 )
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+ return UNKNOWN_HANDSHAKE_TYPE;
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}
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else {
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ssl->options.processReply = getRecordLayerHeader;
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