Moderate: libuser (SL4, SL5, SL6)

Synopsis: Moderate: libuser security update
Issue Date: 2011-01-20
CVE Numbers: CVE-2011-0002

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.

SL4
x86_64
libuser-0.52.5-1.1.el4_8.1.i386.rpm
libuser-0.52.5-1.1.el4_8.1.x86_64.rpm
libuser-devel-0.52.5-1.1.el4_8.1.x86_64.rpm
i386
libuser-0.52.5-1.1.el4_8.1.i386.rpm
libuser-devel-0.52.5-1.1.el4_8.1.i386.rpm
SL5
x86_64
libuser-0.54.7-2.1.el5_5.2.i386.rpm
libuser-0.54.7-2.1.el5_5.2.x86_64.rpm
libuser-devel-0.54.7-2.1.el5_5.2.i386.rpm
libuser-devel-0.54.7-2.1.el5_5.2.x86_64.rpm
i386
libuser-0.54.7-2.1.el5_5.2.i386.rpm
libuser-devel-0.54.7-2.1.el5_5.2.i386.rpm
SL6
x86_64
libuser-0.56.13-4.el6_0.1.i686.rpm
libuser-0.56.13-4.el6_0.1.x86_64.rpm
libuser-devel-0.56.13-4.el6_0.1.i686.rpm
libuser-devel-0.56.13-4.el6_0.1.x86_64.rpm
libuser-python-0.56.13-4.el6_0.1.x86_64.rpm
i386
libuser-0.56.13-4.el6_0.1.i686.rpm
libuser-devel-0.56.13-4.el6_0.1.i686.rpm
libuser-python-0.56.13-4.el6_0.1.i686.rpm

– Scientific Linux Development Team