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pam_ldap Client Authentication Security Bypass Advisory Available in Danish 

Secunia Advisory: SA16518  
Release Date: 2005-08-24
Last Update: 2005-08-25

Critical:
Less critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:pam_ldap 1.x

CVE reference:CVE-2005-2641 (Secunia mirror)

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Description:
A security issue has been reported in pam_ldap, which can be exploited by malicious people to bypass certain security restrictions.

The problem is caused due to an error when a pam_ldap client authenticates against an LDAP server that returns a passwordPolicyResponse control in a BindResponse without the optional "error" field.

Successful exploitation grants access without checking the authentication result.

The security issue has been reported in versions 169 through 179.

Solution:
Update to version 180.

Provided and/or discovered by:
Reported by vendor.

Changelog:
2005-08-25: Added link to US-CERT vulnerability note.

Original Advisory:
US-CERT VU#778916:
http://www.kb.cert.org/vuls/id/778916



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

3 Related Secunia Security Advisories

1. pam_ldap "PasswordPolicyResponse" Security Bypass
2. OpenLDAP / pam_ldap / nss_ldap Password Disclosure Security Issue
3. pam_ldap pam_filter Access Control Bypass Vulnerability


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