GLSA-200508-22 : pam_ldap: Authentication bypass vulnerability

high Nessus Plugin ID 19575

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200508-22 (pam_ldap: Authentication bypass vulnerability)

When a pam_ldap client attempts to authenticate against an LDAP server that omits the optional error value from the PasswordPolicyResponseValue, the authentication attempt will always succeed.
Impact :

A remote attacker may exploit this vulnerability to bypass the LDAP authentication mechanism, gaining access to the system possibly with elevated privileges.
Workaround :

There is no known workaround at this time.

Solution

All pam_ldap users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=sys-auth/pam_ldap-180'

Plugin Details

Severity: High

ID: 19575

File Name: gentoo_GLSA-200508-22.nasl

Version: 1.16

Type: local

Family: Gentoo Local Security Checks

Published: 9/6/2005

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.3

CVSS v2

Risk Factor: High

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: cpe:/o:gentoo:linux, p-cpe:/a:gentoo:linux:pam_ldap

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 8/31/2005

Vulnerability Publication Date: 8/24/2005

Reference Information

CVE: CVE-2005-2641

CERT: 778916

GLSA: 200508-22

Detections

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