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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200501-22">
<title>poppassd_pam: Unauthorized password changing</title>
poppassd_pam allows anyone to change any user's password without
authenticating the user first.
<product type="ebuild">poppassd_pam</product>
<announced>January 11, 2005</announced>
<revised>January 11, 2005: 01</revised>
<package name="net-mail/poppassd_ceti" auto="yes" arch="*">
<unaffected range="ge">1.8.4</unaffected>
<vulnerable range="le">1.0</vulnerable>
<package name="net-mail/poppassd_pam" auto="yes" arch="*">
<vulnerable range="le">1.0</vulnerable>
poppassd_pam is a PAM-enabled server for changing system passwords
that can be used to change POP server passwords.
Gentoo Linux developer Marcus Hanwell discovered that poppassd_pam
did not check that the old password was valid before changing
passwords. Our investigation revealed that poppassd_pam did not call
pam_authenticate before calling pam_chauthtok.
<impact type="high">
A remote attacker could change the system password of any user,
including root. This leads to a complete compromise of the POP
accounts, and may also lead to a complete root compromise of the
affected server, if it also provides shell access authenticated using
system passwords.
There is no known workaround at this time.
All poppassd_pam users should migrate to the new package called
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-mail/poppassd_ceti-1.8.4&quot;</code>
Note: Portage will automatically replace the poppassd_pam
package by the poppassd_ceti package.
<uri link="">CAN-2005-0002</uri>
<metadata tag="requester" timestamp="Tue, 11 Jan 2005 08:56:45 +0000">
<metadata tag="submitter" timestamp="Tue, 11 Jan 2005 12:12:22 +0000">
<metadata tag="bugReady" timestamp="Tue, 11 Jan 2005 19:52:14 +0000">