rssh: Format string vulnerability
Gentoo Linux Security Advisory
||GLSA 200410-28 / rssh
||October 27, 2004
||May 22, 2006: 02
All supported architectures
rssh is vulnerable to a format string vulnerability that allows arbitrary
execution of code with the rights of the connected user, thereby bypassing
rssh is a restricted shell, allowing only a few commands like scp or
sftp. It is often used as a complement to OpenSSH to provide limited
access to users.
Florian Schilhabel from the Gentoo Linux Security Audit Team found a
format string vulnerability in rssh syslogging of failed commands.
Using a malicious command, it may be possible for a remote
authenticated user to execute arbitrary code on the target machine with
user rights, effectively bypassing any restriction of rssh.
There is no known workaround at this time.
All rssh users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/rssh-2.2.2"