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Fix Vulnerability: CVE-2023-27395 TALOS-2023-1735
SoftEther VPN vpnserver WpcParsePacket () heap-based buffer overflow vulnerability https://www.softether.org/9-about/News/904-SEVPN202301 https://jvn.jp/en/jp/JVN64316789/
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@ -541,13 +541,9 @@ UINT DCRegister(DDNS_CLIENT *c, bool ipv6, DDNS_REGISTER_PARAM *p, char *replace
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}
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}
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Format(url2, sizeof(url2), "%s?v=%I64u", url, Rand64());
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Format(url3, sizeof(url3), url2, key_hash_str[2], key_hash_str[3]);
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ReplaceStr(url3, sizeof(url3), url3, "https://", "http://");
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ReplaceStr(url3, sizeof(url3), url3, ".servers", ".open.servers");
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cert_hash = StrToBin(DDNS_CERT_HASH);
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@ -313,8 +313,16 @@ BUF *WpcDataEntryToBuf(WPC_ENTRY *e)
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}
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data_size = e->Size + 4096;
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data = Malloc(data_size);
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data = ZeroMalloc(data_size);
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if (e->Size >= 1)
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{
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size = DecodeSafe64(data, e->Data, e->Size);
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}
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else
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{
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size = 0;
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}
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b = NewBuf();
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WriteBuf(b, data, size);
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