Package: portmap Version: 6.0-9 Severity: normal
Running portmap in chrooted directory is implemented wrongly. Daemon has to chdir(2) after chroot(2) to prevent accessing files outside chroot directory. Running portmap with option -t /var/empty gives following lsof results: # lsof -n -p 7892 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME portmap 7892 daemon cwd DIR 9,1 4096 2 / portmap 7892 daemon rtd DIR 9,1 4096 295046 /var/empty portmap 7892 daemon txt REG 9,1 20488 1589256 /sbin/portmap ... After (potential) successful attack on portmap daemon exploit code can access any file on root filesystem for example by using openat(2) syscalls. Regards, Kupson -- System Information: Debian Release: squeeze/sid APT prefers stable APT policy: (950, 'stable'), (600, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/2 CPU cores) Locale: LANG=pl_PL.UTF-8, LC_CTYPE=pl_PL.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages portmap depends on: ii debconf [debconf-2.0] 1.5.24 Debian configuration management sy ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib ii libwrap0 7.6.q-16 Wietse Venema's TCP wrappers libra ii lsb-base 3.2-20 Linux Standard Base 3.2 init scrip portmap recommends no packages. portmap suggests no packages. -- debconf information excluded -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
