RHBA-2014:1217 - Bug Fix Advisory

Topic

Updated shadow-utils packages that fix one bug are now available for Red Hat
Enterprise Linux 5.

Description

The shadow-utils packages include programs for converting UNIX password files to
the shadow password format, as well as utilities for managing user and group
accounts.

This update fixes the following bug:

• Due to the previously added support for the split groups, the newgrp command

searched all groups on the system for a given GID. This behavior could cause
high network traffic on systems pulling user and group information from a
Lightweight Directory Access Protocol (LDAP) server. The underlying source code
has been modified, so that this exhaustive search is not performed if the user
is a member of a group whose name is specified with newgrp. (BZ#985475)

Users of shadow-utils are advised to upgrade to these updated packages, which
fix this bug.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 985475 - newgrp contains NIS related patches introducing full group scan in LDAP

CVEs

(none)

References

(none)