From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 84977 invoked by alias); 8 Mar 2019 15:56:44 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 84970 invoked by uid 89); 8 Mar 2019 15:56:44 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-102.4 required=5.0 tests=AWL,BAYES_00,GOOD_FROM_CORINNA_CYGWIN,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 spammy=HTo:D*jp, H*F:D*cygwin.com X-HELO: mout.kundenserver.de Received: from mout.kundenserver.de (HELO mout.kundenserver.de) (212.227.126.135) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 08 Mar 2019 15:56:43 +0000 Received: from calimero.vinschen.de ([24.134.7.25]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MALql-1hD3cs1xU3-00Bv4I; Fri, 08 Mar 2019 16:56:37 +0100 Received: by calimero.vinschen.de (Postfix, from userid 500) id EB0DDA80446; Fri, 8 Mar 2019 16:56:35 +0100 (CET) Date: Fri, 08 Mar 2019 15:56:00 -0000 From: Corinna Vinschen To: Takashi Yano Cc: cygwin@cygwin.com Subject: Re: Logging-in using ssh elevates the user privilege. Message-ID: <20190308155635.GP3785@calimero.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: Takashi Yano , cygwin@cygwin.com References: <20190307010000.fc28b73739c2dd66e609982b@nifty.ne.jp> <381052629.20190307141955@yandex.ru> <51233666.20190307182445@yandex.ru> <20190308230138.b7f6b5ac90c9a14cde2647c1@nifty.ne.jp> <20190308141118.GM3785@calimero.vinschen.de> <20190309003908.52b91dd113d07f9ee1025d4c@nifty.ne.jp> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Y46ssxGX9/CNNfN6" Content-Disposition: inline In-Reply-To: <20190309003908.52b91dd113d07f9ee1025d4c@nifty.ne.jp> User-Agent: Mutt/1.11.3 (2019-02-01) X-SW-Source: 2019-03/txt/msg00173.txt.bz2 --Y46ssxGX9/CNNfN6 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-length: 904 On Mar 9 00:39, Takashi Yano wrote: > Hi Corinna, >=20 > On Fri, 8 Mar 2019 15:11:18 +0100 Corinna Vinschen wrote: > > setsockopt (sock, SOL_SOCKET, SO_PEERCRED, NULL, 0); > > before calling accept or connect. >=20 > I added this to the test code but it failed as: >=20 > Server: Created. > Server: Binded. > Server: Listened. > Client: Created. > Client: Connected. > Client: Written. > accept: Software caused connection abort >=20 > Of course, setsockopt() was added also before connect(). >=20 > So, I moved the setsockopt() from just before accept() > to just before listen(), then it succeeded. >=20 > Server: Created. > Server: Binded. > Server: Listened. > Client: Created. > Client: Connected. > Client: Written. > Server: Accepted. > 10: 1234567890 > Server: Read. >=20 > Does this affect to listen() as well? No, listen isn't affected. Corinna --=20 Corinna Vinschen Cygwin Maintainer --Y46ssxGX9/CNNfN6 Content-Type: application/pgp-signature; name="signature.asc" Content-length: 833 -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEoVYPmneWZnwT6kwF9TYGna5ET6AFAlyCkLMACgkQ9TYGna5E T6CawA//ZGBTEDiYkGa7824zgpVItaUfLWy+0YkIpQdA8E6cgZjDtWttkilaF9Y0 orqC23PTldyGIF3Mdt96CJ1d15fu/aU9QY/CDFLhXAjEVwjeor5TRLmXPgZY0hUu w73zl8VsyPQoTcbFhHyOcq7+hcSEydCfLtfG+D3LEfAKHaiSSb729BBN3wbUPGFR 0lTobiNoL4502/PCI4O6aVJkvsSyQDGaD0cvZTjVLawVw4NpsDJC8oTAM2BsNN8N WqRf2ggpqQnjWAKgibjMfo9w0FJg+dzU8w2HPGxYAmfjQZNFU7Islzz6GvSqLlMK Ip2KVv7RZ5V6rN/FOC+s0rLMJP9qIxGnpfsAu3OBQZukIhzV1y6c7qkAtPlHy8JS QRLp3EZNGKm7X+nUqFICGSL0w+e/wcD8d7bgAdE7kPFBLVF4Jr334jZoZ6L9YxiE AaYs/kwcjFEpIeS2u+rV+/xsreifiKZyITktGSch9CoiBt1hPingdQ8AUcSTL1q4 Pck5ecv9JnnNPRvMjt8StGczUmm/NCvVSxmAlnemiJw0UI/EoKYHkkLM5aJ8NgLa 9Vhg/MxbuMku4e9kbhyy4kPS3LQpCOe4jttiS65vb1za6gsrhS7zzX9QbomUP5OY 4q0xOvFdEGVGTXd5IqHCET3f5E0Ij/a1IeQCphkyRd6E7xQE++k= =yO91 -----END PGP SIGNATURE----- --Y46ssxGX9/CNNfN6--