CVSS Base Vector:
For the stable distribution (sarge) this problem has been fixed in
For the unstable distribution (sid) the same behaviour will be
The remote host is missing an update to sudo
announced via advisory DSA 946-2.
The former correction to vulnerabilities in the sudo Linux Distribution Package worked
fine but were too strict for some environments. Therefore we have
reviewed the changes again and allowed some environment variables to
go back into the privileged execution environment. Hence, this
The configuration option env_reset is now activated by default. It
will preserve only the environment variables HOME, LOGNAME, PATH,
SHELL, TERM, DISPLAY, XAUTHORITY, XAUTHORIZATION, LANG, LANGUAGE,
LC_*, and USER in addition to the separate SUDO_* variables.
For completeness please find below the original advisory text:
It has been discovered that sudo, a privileged program, that
provides limited super user privileges to specific users, passes
several environment variables to the program that runs with
elevated privileges. In the case of include paths (e.g. for Perl,
Python, Ruby or other scripting languages) this can cause arbitrary
code to be executed as privileged user if the attacker points to a
manipulated version of a system library.
This update alters the former behaviour of sudo and limits the
number of supported environment variables to LC_*, LANG, LANGUAGE
and TERM. Additional variables are only passed through when set as
env_check in /etc/sudoers, which might be required for some scripts
to continue to work.
For the old stable distribution (woody) this problem has been fixed in
Linux Distribution Package
NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)