Vulnerabilidades

There is an Out-of-bounds read vulnerability in V-Server (v4.0.19.0 and earlier) and V-Server Lite (v4.0.19.0 and earlier). If a user opens a specially crafted file, information may be disclosed and/or arbitrary code may be executed.

linux vserver 2.6 before 2.6.17 suffers from privilege escalation in remount code.

Virtual Private Server (Vserver) 2.0.x before 2.0.2-rc18 and 2.1.x before 2.1.1-rc18 provides certain context capabilities (ccaps) that allow local guest users to perform operations that were only intended to be allowed by the guest-root.

vserver in util-vserver 0.30.209 executes a command as root when the suexec userid parameter is invalid and non-numeric, which might cause local users to inadvertently execute dangerous commands as root.

util-vserver before 0.30.208-1 with kernel-patch-vserver before 1.9.5.5 and 2.x before 2.3 for Debian GNU/Linux sets a default policy that trusts unknown capabilities, which could allow local users to conduct unauthorized activities.

The Linux 2.4 kernel patch in kernel-patch-vserver before 1.9.5.5 and 2.x before 2.3 for Debian GNU/Linux does not correctly set the "chroot barrier" with util-vserver, which allows attackers to access files on the host system that are outside of the vserver.

Race condition in the setsid function in Linux before 2.6.8.1 allows local users to cause a denial of service (crash) and possibly access portions of kernel memory, related to TTY changes, locking, and semaphores.

Linux VServer 1.27 and earlier, 1.3.9 and earlier, and 1.9.1 and earlier shares /proc permissions across all virtual and host servers, which allows local users with the ability to set permissions in /proc to obtain system information or cause a denial of service on other virtual servers or the host server.

Unspecified vulnerability in procfs in the Linux-VServer stable branch for the 2.4 kernel before 1.23 and Linux-VServer development branch for the 2.4 kernel before 1.3.5 has unspecified impact and attack vectors, related to "write access to specific proc entries from a vserver context", a different vulnerability than…

Linux-VServer 1.24 allows local users with root privileges on a virtual server to gain access to the filesystem outside the virtual server via a modified chroot-again exploit using the chmod command.

Multiple race conditions in Linux-VServer 1.22 with Linux kernel 2.4.23 and SMP allow local users to cause a denial of service (kernel oops) via unknown attack vectors related to the (1) s_info and (2) ip_info data structures and the (a) forget_original_parent, (b) goodness, (c) schedule, (d) update_process_times, and…