what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-1262-1

Ubuntu Security Notice USN-1262-1
Posted Nov 16, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1262-1 - It was discovered that Light Display Manager incorrectly handled privileges when reading .dmrc files. A local attacker could exploit this issue to read arbitrary configuration files, bypassing intended permissions. It was discovered that Light Display Manager incorrectly handled links when adjusting permissions on .Xauthority files. A local attacker could exploit this issue to access arbitrary files, and possibly obtain increased privileges. In the default Ubuntu installation, this would be prevented by the Yama link restrictions. Various other issues were also addressed.

tags | advisory, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2011-3153, CVE-2011-4105
SHA-256 | 61e40ebb8859955a63f234353d30af5813f52ebbb4d3496c598362dec3d4de19

Ubuntu Security Notice USN-1262-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1262-1
November 15, 2011

lightdm vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10

Summary:

Several security issues were fixed in Light Display Manager.

Software Description:
- lightdm: Display Manager

Details:

It was discovered that Light Display Manager incorrectly handled privileges
when reading .dmrc files. A local attacker could exploit this issue to read
arbitrary configuration files, bypassing intended permissions.
(CVE-2011-3153)

It was discovered that Light Display Manager incorrectly handled links when
adjusting permissions on .Xauthority files. A local attacker could exploit
this issue to access arbitrary files, and possibly obtain increased
privileges. In the default Ubuntu installation, this would be prevented
by the Yama link restrictions. (CVE-2011-4105)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
liblightdm-gobject-1-0 1.0.6-0ubuntu1.1
liblightdm-qt-1-0 1.0.6-0ubuntu1.1
lightdm 1.0.6-0ubuntu1.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1262-1
CVE-2011-3153, CVE-2011-4105

Package Information:
https://launchpad.net/ubuntu/+source/lightdm/1.0.6-0ubuntu1.1


Login or Register to add favorites

File Archive:

February 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    16 Files
  • 2
    Feb 2nd
    19 Files
  • 3
    Feb 3rd
    0 Files
  • 4
    Feb 4th
    0 Files
  • 5
    Feb 5th
    24 Files
  • 6
    Feb 6th
    2 Files
  • 7
    Feb 7th
    10 Files
  • 8
    Feb 8th
    25 Files
  • 9
    Feb 9th
    37 Files
  • 10
    Feb 10th
    0 Files
  • 11
    Feb 11th
    0 Files
  • 12
    Feb 12th
    17 Files
  • 13
    Feb 13th
    20 Files
  • 14
    Feb 14th
    25 Files
  • 15
    Feb 15th
    15 Files
  • 16
    Feb 16th
    6 Files
  • 17
    Feb 17th
    0 Files
  • 18
    Feb 18th
    0 Files
  • 19
    Feb 19th
    35 Files
  • 20
    Feb 20th
    25 Files
  • 21
    Feb 21st
    18 Files
  • 22
    Feb 22nd
    15 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    10 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    37 Files
  • 27
    Feb 27th
    34 Files
  • 28
    Feb 28th
    27 Files
  • 29
    Feb 29th
    8 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close