FreeBSD : xrdb -- root hole via rogue hostname (2eccb24f-61c0-11e0-b199-0015f2db7bde)

This script is Copyright (C) 2011-2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

Matthias Hopf reports :

By crafting hostnames with shell escape characters, arbitrary commands
can be executed in a root environment when a display manager reads in
the resource database via xrdb.

These specially crafted hostnames can occur in two environments :

Systems are affected are: systems set their hostname via DHCP, and the
used DHCP client allows setting of hostnames with illegal characters.
And systems that allow remote logins via xdmcp.

See also :

http://www.nessus.org/u?004576b2
http://www.nessus.org/u?c98f87fd

Solution :

Update the affected package.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 53439 ()

Bugtraq ID:

CVE ID: CVE-2011-0465

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