Max Vozeler reported a flaw in the design of rssh_chroot_helper whereby it can be exploited to chroot to arbitrary directories and thereby gain root access. If rssh is installed on a system, and non-trusted users on that system have access which is not protected by rssh (i.e. they have full shell access), then they can use rssh_chroot_helper to chroot to arbitrary locations in the file system, and thereby gain root access. Versions of rssh below 2.3.0 are affected.
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