RHEL 4 / 5 / 6 : libuser (RHSA-2011:0170)

Medium Nessus Plugin ID 51590


The remote Red Hat host is missing one or more security updates.


Updated libuser packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The libuser library implements a standardized interface for manipulating and administering user and group accounts. Sample applications that are modeled after applications from the shadow password suite (shadow-utils) are included in these packages.

It was discovered that libuser did not set the password entry correctly when creating LDAP (Lightweight Directory Access Protocol) users. If an administrator did not assign a password to an LDAP based user account, either at account creation with luseradd, or with lpasswd after account creation, an attacker could use this flaw to log into that account with a default password string that should have been rejected. (CVE-2011-0002)

Note: LDAP administrators that have used libuser tools to add users should check existing user accounts for plain text passwords, and reset them as necessary.

Users of libuser should upgrade to these updated packages, which contain a backported patch to correct this issue.


Update the affected packages.

See Also



Plugin Details

Severity: Medium

ID: 51590

File Name: redhat-RHSA-2011-0170.nasl

Version: 1.20

Type: local

Agent: unix

Published: 2011/01/21

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.4

Temporal Score: 4.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libuser, p-cpe:/a:redhat:enterprise_linux:libuser-debuginfo, p-cpe:/a:redhat:enterprise_linux:libuser-devel, p-cpe:/a:redhat:enterprise_linux:libuser-python, cpe:/o:redhat:enterprise_linux:4, cpe:/o:redhat:enterprise_linux:4.8, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:5.6, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.0

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2011/01/20

Vulnerability Publication Date: 2011/01/22

Reference Information

CVE: CVE-2011-0002

BID: 45791

RHSA: 2011:0170