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v4.23-9647-beta

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This commit is contained in:
dnobori
2017-10-18 18:24:21 +09:00
parent acf49ad536
commit faee11ff09
301 changed files with 1695 additions and 2645 deletions
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27
src/Mayaqua/TcpIp.c
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@ -3,9 +3,9 @@
//
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
//
// Copyright (c) 2012-2016 Daiyuu Nobori.
// Copyright (c) 2012-2016 SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) 2012-2016 SoftEther Corporation.
// Copyright (c) Daiyuu Nobori, Ph.D..
// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) SoftEther Corporation.
//
// All Rights Reserved.
//
@ -669,6 +669,7 @@ bool AdjustTcpMssL3(UCHAR *src, UINT src_size, UINT mss)
if (ip_ver == 4)
{
UINT ip_header_size;
UINT ip_total_length;
// IPv4
if (src_size < sizeof(IPV4_HEADER))
{
@ -709,8 +710,22 @@ bool AdjustTcpMssL3(UCHAR *src, UINT src_size, UINT mss)
return false;
}
ip_total_length = READ_USHORT(&ip->TotalLength);
if (ip_total_length < ip_header_size)
{
// Invalid total length
return false;
}
if (src_size < ip_total_length)
{
// No total length
return false;
}
src += ip_header_size;
src_size -= ip_header_size;
src_size = ip_total_length - ip_header_size;
if (src_size < sizeof(TCP_HEADER))
{
@ -4310,7 +4325,3 @@ LABEL_CLEANUP:
return NULL;
}
}
// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
// Department of Computer Science has dozens of overly-enthusiastic geeks.
// Join us: http://www.tsukuba.ac.jp/english/admission/