-----BEGIN PGP SIGNED MESSAGE----- - ------------------------------------------------------------------------ Debian Security Advisory DSA-002-1 security@debian.org http://www.debian.org/security/ Wichert Akkerman November 30, 2000 - ------------------------------------------------------------------------ Package : fsh Problem type : symlink attack Debian-specific: no Colin Phipps found an interesting symlink attack problem in fsh (a tool to quickly run remote commands over rsh/ssh/lsh). When fshd starts it creates a directory in /tmp to hold its sockets. It tries to do that securely by checking of it can chown that directory if it already exists to check if it is owner by the user invoking it. However an attacker can circumvent this check by inserting a symlink to a file that is owner by the user who runs fhsd and replacing that with a directory just before fshd creates the socket. This has been fixed in version 1.0.post.1-3potato. wget url will fetch the file for you dpkg -i file.deb will install the referenced file. Debian GNU/Linux 2.2 alias potato - --------------------------------- Potato was released for alpha, arm, i386, m68k, powerpc and sparc. Source archives: http://security.debian.org/dists/stable/updates/main/source/fsh_1.0.post.1-3potato.diff.gz MD5 checksum: 278a82a3899974ec60b4f92d3a2d53d7 http://security.debian.org/dists/stable/updates/main/source/fsh_1.0.post.1-3potato.dsc MD5 checksum: d2e6eee08ba39ed82b756f39da2a1587 http://security.debian.org/dists/stable/updates/main/source/fsh_1.0.post.1.orig.tar.gz MD5 checksum: d0ade4d65da92256c110a042479109f1 Alpha architecture: http://security.debian.org/dists/stable/updates/main/binary-alpha/fsh_1.0.post.1-3potato_alpha.deb MD5 checksum: 729414dcde81ef4d50681839a8df62a2 ARM architecture: http://security.debian.org/dists/stable/updates/main/binary-arm/fsh_1.0.post.1-3potato_arm.deb MD5 checksum: 5543a9a61b7af9b48c277f4aca83c75a Intel ia32 architecture: http://security.debian.org/dists/stable/updates/main/binary-i386/fsh_1.0.post.1-3potato_i386.deb MD5 checksum: 6d6dd446e87bff6ed57c7176813609c8 Motorola 680x0 architecture: http://security.debian.org/dists/stable/updates/main/binary-m68k/fsh_1.0.post.1-3potato_m68k.deb MD5 checksum: 50bce3a431b141e68a3dfdae1b71f5a9 PowerPC architecture: http://security.debian.org/dists/stable/updates/main/binary-powerpc/fsh_1.0.post.1-3potato_powerpc.deb MD5 checksum: 8e99a4a3657fee8d9545099d02526c5b Sun Sparc architecture: http://security.debian.org/dists/stable/updates/main/binary-sparc/fsh_1.0.post.1-3potato_sparc.deb MD5 checksum: fe3de98286cb7d5e83ca00631785adbe These files will be moved into ftp://ftp.debian.org/debian/dists/stable/*/binary-$arch/ soon. For not yet released architectures please refer to the appropriate directory ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ . - -- - ---------------------------------------------------------------------------- apt-get: deb http://security.debian.org/ stable/updates main dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- Version: 2.6.3ia Charset: noconv iQB1AwUBOiWVL6jZR/ntlUftAQHOswL+K5a0D9jC0wiUZNqpW0ypiQuf4MzkHtgJ 8SO+Bm9hyF5BJgyLnsA8ZKchkF1nAlTMZP0iighUcD0+7C4aVtrtFjtXAc48tK1O bbdyGgROIDB0ONzIm+dYckBQwbNsd1pa =aRkV -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to debian-security-announce-request@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org