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Test ID:1.3.6.1.4.1.25623.1.0.881558
Category:CentOS Local Security Checks
Title:CentOS Update for autofs CESA-2013:0132 centos5
Summary:The remote host is missing an update for the 'autofs'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'autofs'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The autofs utility controls the operation of the automount daemon. The
automount daemon automatically mounts and unmounts file systems.

A bug fix included in RHBA-2012:0264 introduced a denial of service flaw in
autofs. When using autofs with LDAP, a local user could use this flaw to
crash autofs, preventing future mount requests from being processed until
the autofs service was restarted. Note: This flaw did not impact existing
mounts (except for preventing mount expiration). (CVE-2012-2697)

Red Hat would like to thank Ray Rocker for reporting this issue.

This update also fixes the following bugs:

* The autofs init script sometimes timed out waiting for the automount
daemon to exit and returned a shutdown failure if the daemon failed to exit
in time. To resolve this problem, the amount of time that the init script
waits for the daemon has been increased to allow for cases where servers
are slow to respond or there are many active mounts. (BZ#585058)

* Due to an omission when backporting a change, autofs attempted to
download the entire LDAP map at startup. This mistake has now been
corrected. (BZ#767428)

* A function to check the validity of a mount location was meant to check
only for a small subset of map location errors. A recent modification in
error reporting inverted a logic test in this validating function.
Consequently, the scope of the test was widened, which caused the automount
daemon to report false positive failures. With this update, the faulty
logic test has been corrected and false positive failures no longer occur.
(BZ#798448)

* When there were many attempts to access invalid or non-existent keys, the
automount daemon used excessive CPU resources. As a consequence, systems
sometimes became unresponsive. The code has been improved so that automount
checks for invalid keys earlier in the process which has eliminated a
significant amount of the processing overhead. (BZ#847101)

* The auto.master(5) man page did not document the 't, --timeout' option
in the FORMAT options section. This update adds this information to the man
page. (BZ#859890)

This update also adds the following enhancement:

* Previously, it was not possible to configure separate timeout values for
individual direct map entries in the autofs master map. This update adds
this functionality. (BZ#690404)

All users of autofs are advised to upgrade to this updated package, which
contains backported patches to correct these issues and add this
enhancement.

Affected Software/OS:
autofs on CentOS 5

Solution:
Please install the updated packages.

CVSS Score:
4.9

CVSS Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-2697
BugTraq ID: 57183
http://www.securityfocus.com/bid/57183
https://bugzilla.redhat.com/show_bug.cgi?id=831772
http://www.osvdb.org/89878
RedHat Security Advisories: RHSA-2013:0132
http://rhn.redhat.com/errata/RHSA-2013-0132.html
CopyrightCopyright (c) 2013 Greenbone Networks GmbH

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