drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Preisgabe von Informationen in pam_ldap und nss_ldap
Name: |
Preisgabe von Informationen in pam_ldap und nss_ldap
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ID: |
200507-13 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Fr, 15. Juli 2005, 13:00 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2069 |
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Applikationen: |
pam_ldap |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200507-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: pam_ldap and nss_ldap: Plain text authentication leak Date: July 14, 2005 Bugs: #96767 ID: 200507-13
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Synopsis ========
pam_ldap and nss_ldap fail to restart TLS when following a referral, possibly leading to credentials being sent in plain text.
Background ==========
pam_ldap is a Pluggable Authentication Module which allows authentication against an LDAP directory. nss_ldap is a Name Service Switch module which allows 'passwd', 'group' and 'host' database information to be pulled from LDAP. TLS is Transport Layer Security, a protocol that allows encryption of network communications.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-auth/nss_ldap < 239-r1 >= 239-r1 *>= 226-r1 2 sys-auth/pam_ldap < 178-r1 >= 178-r1 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
Description ===========
Rob Holland of the Gentoo Security Audit Team discovered that pam_ldap and nss_ldap fail to use TLS for referred connections if they are referred to a master after connecting to a slave, regardless of the "ssl start_tls" ldap.conf setting.
Impact ======
An attacker could sniff passwords or other sensitive information as the communication is not encrypted.
Workaround ==========
pam_ldap and nss_ldap can be set to force the use of SSL instead of TLS.
Resolution ==========
All pam_ldap users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-auth/pam_ldap-178-r1"
All nss_ldap users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose sys-auth/nss_ldap
References ==========
[ 1 ] CAN-2005-2069 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2069
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200507-13.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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