Red Hat Bugzilla – Bug 164487
CAN-2005-0205 kdenetwork- kppp local domain name hijacking
Last modified: 2007-04-18 13:29:55 EDT
legacy version of bug 148912
my 7.3 system has /usr/bin/kppp as part of package kppp-3.0.5a-0.73.0
This issue was worked on for RHEL2.1 and RHEL3 in bug #148912. Is also
known as KDE Advisory "advisory-20050228-1," at
From that advisory:
"1. Systems affected:
"kppp as included in KDE up to including KDE 3.1.5. KDE 3.2.x
and newer are not affected.
"kppp, if installed suid root, allows local attackers to hijack
a system's domain name resolution function.
"A fix introduced for a similiar vulnerability, added to the code
base in 1998, was incomplete and can be bypassed.
"In 2002 a proper fix was made by Dirk Mueller for KDE 3.2 as part
of a code audit. No advisory was issued because the problem was
considered to be unexploitable at that time. iDEFENSE now
rediscovered the issue and supplied an example exploit for this
"Modifications to /etc/hosts and /etc/resolv.conf can be done by
local users which allows manipulation of host and domain name
lookups, enabling other phishing and social engineering attacks."
This issue affects RHL7.3, RHL9, and FC1.
Red Hat issued http://rhn.redhat.com/errata/RHSA-2005-175.html on this
Red Hat Linux and Fedora Core releases <=4 are now completely unmaintained.
These bugs can't be fixed in these versions. If the issue still persists in
current Fedora Core releases, please reopen. Thank you, and sorry about this.