- -------------------------------------------------------------------------- Debian Security Advisory DSA 079-2 security@debian.org http://www.debian.org/security/ Martin Schulze February 8th, 2002 - -------------------------------------------------------------------------- Package : uucp Vulnerability : uucp uid/gid access Problem-Type : local and remote Debian-specific: no Zenith Parsec discovered a security hole in Taylor UUCP 1.06.1. It permits a local user to copy any file to anywhere which is writable by the uucp uid, which effectively means that a local user can completely subvert the UUCP subsystem, including stealing mail, etc. If a remote user with UUCP access is able to create files on the local system, and can successfully make certain guesses about the local directory structure layout, then the remote user can also subvert the UUCP system. A default installation of UUCP will permit a remote user to create files on the local system if the UUCP public directory has been created with world write permissions. Obviously this security hole is serious for anybody who uses UUCP on a multi-user system with untrusted users, or anybody who uses UUCP and permits connections from untrusted remote systems. It was thought that this problem has been fixed with DSA 079-1, but that didn't fix all variations of the problem. The problem is fixed in version 1.06.1-11potato2 of uucp which uses a patch from the upstream author Ian Lance Taylor. We recommend that you upgrade your uucp packages immediately. wget url will fetch the file for you dpkg -i file.deb will install the referenced file. If you are using the apt-get package manager, use the line for sources.list as given below: apt-get update will update the internal database apt-get upgrade will install corrected packages You may use an automated update by adding the resources from the footer to the proper configuration. Debian GNU/Linux 2.2 alias potato - ------------------------------------ Source archives: http://security.debian.org/dists/stable/updates/main/source/uucp_1.06.1-11potato2.diff.gz MD5 checksum: 2c712e69b3b529f30153daf8b21e2bab http://security.debian.org/dists/stable/updates/main/source/uucp_1.06.1-11potato2.dsc MD5 checksum: 4f2b87605425e9d291efebb8428e5df4 http://security.debian.org/dists/stable/updates/main/source/uucp_1.06.1.orig.tar.gz MD5 checksum: 390af5277915fcadbeee74d2f3038af9 Alpha architecture: http://security.debian.org/dists/stable/updates/main/binary-alpha/uucp_1.06.1-11potato2_alpha.deb MD5 checksum: 802b9176a7d288f396483e02c70fe3e7 ARM architecture: http://security.debian.org/dists/stable/updates/main/binary-arm/uucp_1.06.1-11potato2_arm.deb MD5 checksum: e3cc46ac6b268471b7a42c428a47bb64 Intel ia32 architecture: http://security.debian.org/dists/stable/updates/main/binary-i386/uucp_1.06.1-11potato2_i386.deb MD5 checksum: 3cb57a9ad76d42dbc5d2559d585b39d1 Motorola 680x0 architecture: http://security.debian.org/dists/stable/updates/main/binary-m68k/uucp_1.06.1-11potato2_m68k.deb MD5 checksum: 34ac6394a622f0e492288d9a33b0a67a PowerPC architecture: http://security.debian.org/dists/stable/updates/main/binary-powerpc/uucp_1.06.1-11potato2_powerpc.deb MD5 checksum: 7dd85581fcc2547df432060c2ca9afa9 Sun Sparc architecture: http://security.debian.org/dists/stable/updates/main/binary-sparc/uucp_1.06.1-11potato2_sparc.deb MD5 checksum: f6460f4436d521140d15ee2c4d6dee17 These files will probably be moved into the stable distribution on its next revision. - --------------------------------------------------------------------------------- For apt-get: deb http://security.debian.org/ stable/updates main For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main Mailing list: debian-security-announce@lists.debian.org Package info: `apt-cache show ' and http://packages.debian.org/;