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Allow a zero length extension block

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It is valid for an extension block to be present in a ClientHello, but to
be of zero length.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
This commit is contained in:
Adam Langley 2015-06-12 08:05:49 +01:00 committed by Matt Caswell
parent 4b464e7b46
commit 1ae3fdbe6a
1 changed files with 6 additions and 6 deletions
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12
ssl/t1_lib.c
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@ -1940,12 +1940,12 @@ static int ssl_scan_clienthello_tlsext(SSL *s, unsigned char **p,
s->srtp_profile = NULL;
if (data >= (d + n - 2)) {
if (data != d + n)
goto err;
else
goto ri_check;
}
if (data == d + n)
goto ri_check;
if (data > (d + n - 2))
goto err;
n2s(data, len);
if (data > (d + n - len))