Package: aptitude
Version: 0.4.11.2-1
Severity: serious

Since /var/lock is installed with mode 1777 on debian systems, if
/var/lock/aptitude does not yet exist, a normal user can symlink it to an
arbitrary location on the filesystem. Aptitude them attempts to open
this file with mode O_TRUNC, allowing an ordinary user to truncate an
arbitrary file on the filesystem the next time the system administrator
opens aptitude.

Aptitude should use O_NOFOLLOW on the open call in question to avoid
inadverant truncation.

-- Package-specific info:
aptitude 0.4.11.2 compiled at Apr 12 2008 04:21:26
Compiler: g++ 4.2.3 (Debian 4.2.3-3)
Compiled against:
  apt version 4.6.0
  NCurses version 5.6
  libsigc++ version: 2.0.18
  Ept support enabled.

Current library versions:
  NCurses version: ncurses 5.6.20080308
  cwidget version: 0.5.11
  Apt version: 4.6.0
        linux-gate.so.1 =>  (0xb7f38000)
        libapt-pkg-libc6.7-6.so.4.6 => /usr/lib/libapt-pkg-libc6.7-6.so.4.6 
(0xb7e63000)
        libncursesw.so.5 => /lib/libncursesw.so.5 (0xb7e27000)
        libsigc-2.0.so.0 => /usr/lib/libsigc-2.0.so.0 (0xb7e21000)
        libcwidget.so.3 => /usr/lib/libcwidget.so.3 (0xb7d30000)
        libept.so.0 => /usr/lib/libept.so.0 (0xb7cb8000)
        libxapian.so.15 => /usr/lib/libxapian.so.15 (0xb7b45000)
        libz.so.1 => /usr/lib/libz.so.1 (0xb7b30000)
        libpthread.so.0 => /lib/i686/cmov/libpthread.so.0 (0xb7b18000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7a2b000)
        libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb7a05000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb79f8000)
        libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb78aa000)
        libutil.so.1 => /lib/i686/cmov/libutil.so.1 (0xb78a6000)
        libdl.so.2 => /lib/i686/cmov/libdl.so.2 (0xb78a2000)
        /lib/ld-linux.so.2 (0xb7f39000)
Terminal: screen
$DISPLAY not set.
`which aptitude`: /usr/bin/aptitude
aptitude version information:

aptitude linkage:

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.18.8-domU-linode7 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages aptitude depends on:
ii  apt [libapt-pkg-libc6. 0.7.11            Advanced front-end for dpkg
ii  libc6                  2.7-10            GNU C Library: Shared libraries
ii  libcwidget3            0.5.11-1          high-level terminal interface libr
ii  libept0                0.5.17            High-level library for managing De
ii  libgcc1                1:4.3.0-3         GCC support library
ii  libncursesw5           5.6+20080308-1    Shared libraries for terminal hand
ii  libsigc++-2.0-0c2a     2.0.18-2          type-safe Signal Framework for C++
ii  libstdc++6             4.3.0-3           The GNU Standard C++ Library v3
ii  libxapian15            1.0.5-1           Search engine library
ii  zlib1g                 1:1.2.3.3.dfsg-12 compression library - runtime

Versions of packages aptitude recommends:
pn  aptitude-doc-en | aptitude-do <none>     (no description available)
ii  libparse-debianchangelog-perl 1.1.1-2    parse Debian changelogs and output

-- no debconf information



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