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avoid ArgumentOutOfRangeException while processing invalid or incomplete TLS frame #63184

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merged 2 commits into from
Dec 31, 2021
Merged

avoid ArgumentOutOfRangeException while processing invalid or incomplete TLS frame #63184

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avoid ArgumentOutOfRangeException while processing invalid or incompl…
wfurt Dec 29, 2021
659200d
feedback from review
wfurt Dec 31, 2021
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7 changes: 1 addition & 6 deletions src/libraries/System.Net.Security/src/System/Net/Security/SslStream.Implementation.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -460,11 +460,6 @@ private async ValueTask<ProtocolToken> ReceiveBlobAsync<TIOAdapter>(TIOAdapter a
where TIOAdapter : IReadWriteAdapter
{
int readBytes = await FillHandshakeBufferAsync(adapter, SecureChannel.ReadHeaderSize).ConfigureAwait(false);
if (readBytes == 0)
{
throw new IOException(SR.net_io_eof);
}

if (_framing == Framing.Unified || _framing == Framing.Unknown)
{
_framing = DetectFraming(_handshakeBuffer.ActiveReadOnlySpan);
Expand Down Expand Up @@ -1083,7 +1078,7 @@ private ValueTask<int> FillHandshakeBufferAsync<TIOAdapter>(TIOAdapter adapter,
int bytesRead = t.Result;
if (bytesRead == 0)
{
return new ValueTask<int>(0);
throw new IOException(SR.net_io_eof);
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}

_handshakeBuffer.Commit(bytesRead);
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43 changes: 43 additions & 0 deletions src/libraries/System.Net.Security/tests/FunctionalTests/ServerAsyncAuthenticateTest.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -285,6 +285,49 @@ public async Task ServerAsyncAuthenticate_NoCertificate_Throws(bool useAsync)
}
}

[Theory]
[InlineData(true)]
[InlineData(false)]
public async Task ServerAsyncAuthenticate_InvalidHello_Throws(bool close)
{
(NetworkStream client, NetworkStream server) = TestHelper.GetConnectedTcpStreams();
using (client)
using (SslStream ssl = new SslStream(server))
{
byte[] buffer = new byte[182];
buffer[0] = 178;
buffer[1] = 0;
buffer[2] = 0;
buffer[3] = 1;
buffer[4] = 133;
buffer[5] = 166;

Task t1 = ssl.AuthenticateAsServerAsync(_serverCertificate, false, false);
Task t2 = client.WriteAsync(buffer).AsTask();
if (close)
{
await t2.WaitAsync(TestConfiguration.PassingTestTimeout);
client.Socket.Shutdown(SocketShutdown.Send);
}
else
{
// Write enough data to full frame size
buffer = new byte[13000];
t2 = client.WriteAsync(buffer).AsTask();
await t2.WaitAsync(TestConfiguration.PassingTestTimeout);
}

if (close)
{
await Assert.ThrowsAsync<IOException>(() => t1);
}
else
{
await Assert.ThrowsAsync<AuthenticationException>(() => t1);
}
}
}

public static IEnumerable<object[]> ProtocolMismatchData()
{
if (PlatformDetection.SupportsSsl3)
Expand Down