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Gentoo Linux Security Advisory GLSA 200508-22 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: pam_ldap: Authentication bypass vulnerability |
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Date: August 31, 2005 |
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Bugs: #103659 |
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ID: 200508-22 |
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Synopsis |
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======== |
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|
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pam_ldap contains a vulnerability that may allow a remote attacker to |
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gain system access. |
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Background |
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========== |
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|
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pam_ldap is a Pluggable Authentication Module which allows |
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authentication against LDAP directories. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 sys-auth/pam_ldap < 180 >= 180 |
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Description |
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=========== |
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|
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When a pam_ldap client attempts to authenticate against an LDAP server |
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that omits the optional error value from the |
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PasswordPolicyResponseValue, the authentication attempt will always |
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succeed. |
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Impact |
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====== |
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|
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A remote attacker may exploit this vulnerability to bypass the LDAP |
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authentication mechanism, gaining access to the system possibly with |
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elevated privileges. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All pam_ldap users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-auth/pam_ldap-180" |
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References |
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========== |
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|
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[ 1 ] CAN-2005-2641 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2641 |
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[ 2 ] US-CERT VU#778916 |
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http://www.kb.cert.org/vuls/id/778916 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200508-22.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.0 |
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