-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------ Debian Security Advisory DSA-1709-1 security@debian.org http://www.debian.org/security/ Thijs Kinkhorst January 21, 2009 http://www.debian.org/security/faq - ------------------------------------------------------------------------ Package : shadow Vulnerability : race condition Problem type : local Debian-specific: no CVE Id(s) : CVE-2008-5394 Debian Bug : 505271 Paul Szabo discovered that login, the system login tool, did not correctly handle symlinks while setting up tty permissions. If a local attacker were able to gain control of the system utmp file, they could cause login to change the ownership and permissions on arbitrary files, leading to a root privilege escalation. For the stable distribution (etch), this problem has been fixed in version 4.0.18.1-7+etch1. For the unstable distribution (sid), this problem has been fixed in version 4.1.1-6. We recommend that you upgrade your shadow package. Upgrade instructions - -------------------- 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 4.0 alias etch - ------------------------------- Source archives: http://security.debian.org/pool/updates/main/s/shadow/shadow_4.0.18.1.orig.tar.gz Size/MD5 checksum: 2354234 3f54eaa3a35e7c559f4def92e9957581 http://security.debian.org/pool/updates/main/s/shadow/shadow_4.0.18.1-7+etch1.diff.gz Size/MD5 checksum: 297817 b78d9d738765da65a6b55dea102569c3 http://security.debian.org/pool/updates/main/s/shadow/shadow_4.0.18.1-7+etch1.dsc Size/MD5 checksum: 1406 ec01ac54e482ea552fdae5753d6c1745 alpha architecture (DEC Alpha) http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_alpha.deb Size/MD5 checksum: 810680 329e1cd5ad019d3984411b1a8a5c77ad http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_alpha.deb Size/MD5 checksum: 943992 76690a44c565b4594892bab69eaf7e30 amd64 architecture (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_amd64.deb Size/MD5 checksum: 867696 4ce4e2f7884cd883729123163930b9dc http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_amd64.deb Size/MD5 checksum: 806412 3a6171d83a4b79846fe4831b02007a4b arm architecture (ARM) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_arm.deb Size/MD5 checksum: 778766 df6126b8cd29de54831976a24d28589e http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_arm.deb Size/MD5 checksum: 791770 a9e7b122a8f9a7944bfc91b7cec77554 hppa architecture (HP PA RISC) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_hppa.deb Size/MD5 checksum: 847846 8562b322610062eb31689e467d80ff7c http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_hppa.deb Size/MD5 checksum: 804082 af4a3f06a93be5cea7dd7dfeed8eed1b i386 architecture (Intel ia32) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_i386.deb Size/MD5 checksum: 792460 82c630b2f4e18217170a73a2dab27cba http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_i386.deb Size/MD5 checksum: 796578 439cd50477db064cdf11d9b48c0e9af0 ia64 architecture (Intel ia64) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_ia64.deb Size/MD5 checksum: 1048736 79434b796109c1565f0f0be3cb8d06f0 http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_ia64.deb Size/MD5 checksum: 826456 13df2a0a071f407c84b25ae3ed6077bc mips architecture (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_mips.deb Size/MD5 checksum: 804530 0523d4220e9cb7e8b2342a0a33c1e989 http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_mips.deb Size/MD5 checksum: 899612 597b58ea81e074bae374b412f28e1252 mipsel architecture (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_mipsel.deb Size/MD5 checksum: 908860 ade3427a1b8b693a098544ac27ae17aa http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_mipsel.deb Size/MD5 checksum: 805100 fd9d9e49cd9b7864b06865c097f0ba08 powerpc architecture (PowerPC) http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_powerpc.deb Size/MD5 checksum: 805442 c8f8683c70aabfbea99f27115afda81e http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_powerpc.deb Size/MD5 checksum: 856164 16db8928aa4424f57372e32b23b7de58 s390 architecture (IBM S/390) http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_s390.deb Size/MD5 checksum: 820700 2cd319907d34afe08918cd5f93461f60 http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_s390.deb Size/MD5 checksum: 804200 4851f0e0fa27d5786353b6235316215a sparc architecture (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/s/shadow/login_4.0.18.1-7+etch1_sparc.deb Size/MD5 checksum: 800196 19f9b82843f53040d2083e348d0300d4 http://security.debian.org/pool/updates/main/s/shadow/passwd_4.0.18.1-7+etch1_sparc.deb Size/MD5 checksum: 789552 ae637bec3b696937705a094db261e973 These files will probably be moved into the stable distribution on its next update. - --------------------------------------------------------------------------------- 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/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQEVAwUBSXbyFCIIoQCMVaAcAQKcrAf+JA/6guXCgfB6e8LETj+z/71HAHHxV5Ub CXGqOD/5kCshtb4hvV5QgmDZrZRnpbgngih8/T2HKyw7BOWzmZl4TTDooeI3jq5D czMIWeQnUW/BpjYdZ8HLt04GIu+N0DxmIMeuKvxvMCmgLTCBcxYDRZsZpCwUL0oG 2NxnimQxYjadKIfvkbRiGdatI5xA41lg9NHfswnk63niyUrH87k5vy16qpRJGuwv wcN/O4E5xPRImjcFUYZTsOUMa8yRgEfrsxT94PWhgjhUv4TxrWH2WlSN3CHjMbaq VEuMie74f42hZanlfz6YLxftqr4ZZSFfFENb86JqXCkPzC00uf8maw== =4++w -----END PGP SIGNATURE-----