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Category: Application (Generic) > udev

Vendors: kernel.org

(Red Hat Issues Fix) udev Insecure File Permissions in '/dev/input' May Let Local Users Obtain Sensitive Information

SecurityTracker Alert ID: 1015389

SecurityTracker URL: http://securitytracker.com/id?1015389

CVE Reference: CVE-2005-3631 (Links to External Site)

Date: Dec 20 2005

Impact: Disclosure of authentication information, Disclosure of user information

Fix Available: Yes Vendor Confirmed: Yes

Advisory: Red Hat Advisory

Version(s): possibly v078

Description: A vulnerability was reported in udev. A local user may be able to obtain potentially sensitive user data.

The udev application does not properly set permissions on various files in /dev/input. A local user may be able to access the files to obtain potentially sensitive data entered by a user at the console, such as passwords.

Richard Cunningham discovered this vulnerability.

Impact: A local user may be able to obtain potentially sensitive user data.

Vendor URL: www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html (Links to External Site)

Cause: Access control error

Underlying OS: Linux (Red Hat Enterprise)

Reported By: bugzilla@redhat.com

Message History: This archive entry is a follow-up to the message listed below.

Dec 20 2005

udev Insecure File Permissions in '/dev/input' May Let Local Users Obtain Sensitive Information

Source Message Contents

Date: Tue, 20 Dec 2005 10:18:18 -0500
From: bugzilla@redhat.com
Subject: [RHSA-2005:864-01] Important: udev security update

 

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Important: udev security update
Advisory ID:       RHSA-2005:864-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-864.html
Issue date:        2005-12-20
Updated on:        2005-12-20
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2005-3631
- ---------------------------------------------------------------------

1. Summary:

Updated udev packages that fix a security issue are now available.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

The udev package contains an implementation of devfs in userspace using
sysfs and /sbin/hotplug.

Richard Cunningham discovered a flaw in the way udev sets permissions on
various files in /dev/input. It may be possible for an authenticated
attacker to gather sensitive data entered by a user at the console, such as
passwords. The Common Vulnerabilities and Exposures project has assigned
the name CVE-2005-3631 to this issue.

All users of udev should upgrade to these updated packages, which contain a
backported patch and are not vulnerable to this issue.

4. Solution:

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

This update is available via Red Hat Network.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed (http://bugzilla.redhat.com/):

174845 - CVE-2005-3631 /dev/input/* incorrect permissions


6. RPMs required:

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/udev-039-10.10.EL4.3.src.rpm
479e8b3ac5f9ca72193827d40e0fdd13  udev-039-10.10.EL4.3.src.rpm

i386:
0f694e4ae57487ce5e2c23627f8076ce  udev-039-10.10.EL4.3.i386.rpm

ia64:
117b4faf0ff4c5204b27f84da509e5eb  udev-039-10.10.EL4.3.ia64.rpm

ppc:
e80ead84ea6e72323006f5f1cdcde4f1  udev-039-10.10.EL4.3.ppc.rpm

s390:
bf2a4abfe19dd9d37296e002d8308f74  udev-039-10.10.EL4.3.s390.rpm

s390x:
60b1c19d6b0c198054032c943368e633  udev-039-10.10.EL4.3.s390x.rpm

x86_64:
2dd7e790e730dc1e5b64048e02e90225  udev-039-10.10.EL4.3.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/udev-039-10.10.EL4.3.src.rpm
479e8b3ac5f9ca72193827d40e0fdd13  udev-039-10.10.EL4.3.src.rpm

i386:
0f694e4ae57487ce5e2c23627f8076ce  udev-039-10.10.EL4.3.i386.rpm

x86_64:
2dd7e790e730dc1e5b64048e02e90225  udev-039-10.10.EL4.3.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/udev-039-10.10.EL4.3.src.rpm
479e8b3ac5f9ca72193827d40e0fdd13  udev-039-10.10.EL4.3.src.rpm

i386:
0f694e4ae57487ce5e2c23627f8076ce  udev-039-10.10.EL4.3.i386.rpm

ia64:
117b4faf0ff4c5204b27f84da509e5eb  udev-039-10.10.EL4.3.ia64.rpm

x86_64:
2dd7e790e730dc1e5b64048e02e90225  udev-039-10.10.EL4.3.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/udev-039-10.10.EL4.3.src.rpm
479e8b3ac5f9ca72193827d40e0fdd13  udev-039-10.10.EL4.3.src.rpm

i386:
0f694e4ae57487ce5e2c23627f8076ce  udev-039-10.10.EL4.3.i386.rpm

ia64:
117b4faf0ff4c5204b27f84da509e5eb  udev-039-10.10.EL4.3.ia64.rpm

x86_64:
2dd7e790e730dc1e5b64048e02e90225  udev-039-10.10.EL4.3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3631

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.
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