Scientific Linux Security Update : ipa on SL6.x i386/x86_64 (20130123)

high Nessus Plugin ID 64091

Language:

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

A weakness was found in the way IPA clients communicated with IPA servers when initially attempting to join IPA domains. As there was no secure way to provide the IPA server's Certificate Authority (CA) certificate to the client during a join, the IPA client enrollment process was susceptible to man-in-the-middle attacks. This flaw could allow an attacker to obtain access to the IPA server using the credentials provided by an IPA client, including administrative access to the entire domain if the join was performed using an administrator's credentials. (CVE-2012-5484)

Note: This weakness was only exposed during the initial client join to the realm, because the IPA client did not yet have the CA certificate of the server. Once an IPA client has joined the realm and has obtained the CA certificate of the IPA server, all further communication is secure. If a client were using the OTP (one-time password) method to join to the realm, an attacker could only obtain unprivileged access to the server (enough to only join the realm).

This update must be installed on both the IPA client and IPA server.
When this update has been applied to the client but not the server, ipa-client-install, in unattended mode, will fail if you do not have the correct CA certificate locally, noting that you must use the '--force' option to insecurely obtain the certificate. In interactive mode, the certificate will try to be obtained securely from LDAP. If this fails, you will be prompted to insecurely download the certificate via HTTP. In the same situation when using OTP, LDAP will not be queried and you will be prompted to insecurely download the certificate via HTTP.

After installing the update, changes in LDAP are handled by ipa-ldap-updater automatically and are effective immediately.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 64091

File Name: sl_20130123_ipa_on_SL6_x.nasl

Version: 1.8

Type: local

Agent: unix

Family: Scientific Linux Local Security Checks

Published: 1/25/2013

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.9

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:certmonger, p-cpe:/a:fermilab:scientific_linux:ipa-admintools, p-cpe:/a:fermilab:scientific_linux:ipa-client, p-cpe:/a:fermilab:scientific_linux:ipa-debuginfo, p-cpe:/a:fermilab:scientific_linux:ipa-python, p-cpe:/a:fermilab:scientific_linux:ipa-server, p-cpe:/a:fermilab:scientific_linux:ipa-server-selinux, p-cpe:/a:fermilab:scientific_linux:libipa_hbac, p-cpe:/a:fermilab:scientific_linux:libipa_hbac-devel, p-cpe:/a:fermilab:scientific_linux:libipa_hbac-python, p-cpe:/a:fermilab:scientific_linux:libsss_autofs, p-cpe:/a:fermilab:scientific_linux:mod_auth_kerb, p-cpe:/a:fermilab:scientific_linux:pki-ca, p-cpe:/a:fermilab:scientific_linux:pki-common, p-cpe:/a:fermilab:scientific_linux:pki-common-javadoc, p-cpe:/a:fermilab:scientific_linux:pki-java-tools, p-cpe:/a:fermilab:scientific_linux:pki-java-tools-javadoc, p-cpe:/a:fermilab:scientific_linux:pki-native-tools, p-cpe:/a:fermilab:scientific_linux:pki-selinux, p-cpe:/a:fermilab:scientific_linux:pki-setup, p-cpe:/a:fermilab:scientific_linux:pki-silent, p-cpe:/a:fermilab:scientific_linux:pki-symkey, p-cpe:/a:fermilab:scientific_linux:pki-util, p-cpe:/a:fermilab:scientific_linux:pki-util-javadoc, p-cpe:/a:fermilab:scientific_linux:python-memcached, p-cpe:/a:fermilab:scientific_linux:slapi-nis, p-cpe:/a:fermilab:scientific_linux:sssd, p-cpe:/a:fermilab:scientific_linux:sssd-client, p-cpe:/a:fermilab:scientific_linux:sssd-tools, x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 1/23/2013

Vulnerability Publication Date: 1/27/2013

Reference Information

CVE: CVE-2012-5484

Detections

Analytics