(RHSA-2015:1483) Important: libuser security update

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.

Two flaws were found in the way the libuser library handled the /etc/passwd
file. A local attacker could use an application compiled against libuser
(for example, userhelper) to manipulate the /etc/passwd file, which could
result in a denial of service or possibly allow the attacker to escalate
their privileges to root. (CVE-2015-3245, CVE-2015-3246)

Red Hat would like to thank Qualys for reporting these issues.

All libuser users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue.