drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ungeprüfte Änderung von Paßwörtern in poppassd_pam
Name: |
Ungeprüfte Änderung von Paßwörtern in poppassd_pam
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ID: |
200501-22 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 11. Januar 2005, 12:00 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0002 |
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Applikationen: |
poppassd_pam |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200501-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: poppassd_pam: Unauthorized password changing Date: January 11, 2005 Bugs: #75820 ID: 200501-22
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Synopsis ========
poppassd_pam allows anyone to change any user's password without authenticating the user first.
Background ==========
poppassd_pam is a PAM-enabled server for changing system passwords that can be used to change POP server passwords.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- net-mail/poppassd_ceti <= 1.0 >= 1.8.4 net-mail/poppassd_pam <= 1.0 Vulnerable! -------------------------------------------------------------------
Description ===========
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 ======
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.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All poppassd_pam users should migrate to the new package called poppassd_ceti:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/poppassd_ceti-1.8.4"
Note: Portage will automatically replace the poppassd_pam package by the poppassd_ceti package.
References ==========
[ 1 ] CAN-2005-0002 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0002
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200501-22.xml
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License =======
Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0
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