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Debian GNU/Linux 2.1 Advisory: Mailman Cookie Access Severity Critical

We have become aware that the version mailman as supplied in Debian GNU/Linux 2.1 has a problem with verifying list administrators. The problem is that the cookie value generation used was predictable, so using forged authentication cookies it was possible to access the list administration webpages without knowing the proper password. . -----BEGIN PGP SIGNED MESSAGE----- We have become aware that the version mailman as supplied in Debian GNU/Linux 2.1 has a problem with verifying list administrators. The problem is that the cookie value generation used was predictable, so using forged authentication cookies it was possible to access the list administration webpages without knowing the proper password. More information about this vulnerability can be found at June/001128.html This has been fixed in version 1.0rc2-5. We recommend you upgrade your mailman package immediately. wget url will fetch the file for you dpkg -i file.deb will install the referenced file. Debian GNU/Linux 2.1 alias slink - -------------------------------- This version of Debian was released only for Intel, the Motorola 680x0, the alpha and the Sun sparc architecture. Source archives: source/mailman_1.0rc2-5.diff.gz MD5 checksum: 096d96ebf89341b148d2ae917037559a source/mailman_1.0rc2-5.dsc MD5 checksum: a407c72b6d80163b04ddc5fb895b8fbd es/binary-source/mailman_1.0rc2.orig.tar.gz MD5 checksum: 6916959db9144ecaf004fcd9be32a020 Alpha architecture: alpha/mailman_1.0rc2-5_alpha.deb MD5 checksum: 0f053b62d9dd51d4e2c0843258eee453 Intel ia32 architecture: i386/mailman_1.0rc2-5_i386.deb MD5 checksum: d9b0f93458a41055ba1b39891e0a5ca5 Motorola 680x0 architecture: m68k/mailman_1.0rc2-5_m68k.deb MD5 checksum: 94fc7996e4b296a4c944fe08ccb44503 Sun Sparc architecture: sparc/mailman_1.0rc2-5_sparc.deb MD5 checksum: e27d100b24d0c87c02cc86b7aadded0d These files will be copied into soon. Please note you canalso use apt to always get the latest security updates. To do so add the following line to /etc/apt/sources.list: deb Debian -- Security Information stable updates - -- Debian GNU/Linux . Security Managers . This email address is being protected from spambots. You need JavaScript enabled to view it. This email address is being protected from spambots. You need JavaScript enabled to view it. Christian Hudon . Wichert Akkerman . Martin Schulze . . -----BEGIN PGP SIGNATURE----- Version: 2.6.3ia Charset: noconv iQB1AwUBN3Av9KjZR/ntlUftAQFFjwL/VwNslEzha3yT4k3wwDSedm0XEiHIUCS1 +ngWFIrPnLzfJ/jK2atXAZc98wwFxjxOTDWnGuc4RBjRi4NqBduQsVwaIHelSbK2 u9uPiNvzUhPiCUdzDusjy8ysUmzJIHd8 =PgQB -----END PGP SIGNATURE----- . Mail server in Debian GNU/Linux 2.1 faces a cookie vulnerability permitting unauthorized entry. Security patch advised for protection.. Mailman Security, Debian Cookie Attack, List Administration Issue. . Severity: Critical. LinuxSecurity.com Team

Dec 13, 1999 •Critical Debian