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

Ubuntu Security Notice USN-1140-2

Ubuntu Security Notice USN-1140-2
Posted Jun 1, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1140-2 - USN-1140-1 fixed vulnerabilities in PAM. A regression was found that caused cron to stop working with a "Module is unknown" error. As a result, systems configured with automatic updates will not receive updates until cron is restarted, these updates are installed or the system is rebooted. This update fixes the problem. Marcus Granado discovered that PAM incorrectly handled configuration files with non-ASCII usernames. A remote attacker could use this flaw to cause a denial of service, or possibly obtain login access with a different users username. This issue only affected Ubuntu 8.04 LTS. It was discovered that the PAM pam_xauth, pam_env and pam_mail modules incorrectly handled dropping privileges when performing operations. A local attacker could use this flaw to read certain arbitrary files, and access other sensitive information. It was discovered that the PAM pam_namespace module incorrectly cleaned the environment during execution of the namespace.init script. A local attacker could use this flaw to possibly gain privileges. It was discovered that the PAM pam_xauth module incorrectly handled certain failures. A local attacker could use this flaw to delete certain unintended files. It was discovered that the PAM pam_xauth module incorrectly verified certain file properties. A local attacker could use this flaw to cause a denial of service.

tags | advisory, remote, denial of service, arbitrary, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2010-3435
SHA-256 | 5d201859cf56d4bf364b41135aa2c9404cb69d1a53679b2460baf65020bf8b0f

Ubuntu Security Notice USN-1140-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1140-2
May 31, 2011

pam regression
==========================================================================

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

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

The USN-1140-1 PAM update caused cron to stop working.

Software Description:
- pam: Pluggable Authentication Modules

Details:

USN-1140-1 fixed vulnerabilities in PAM. A regression was found that caused
cron to stop working with a "Module is unknown" error. As a result, systems
configured with automatic updates will not receive updates until cron is
restarted, these updates are installed or the system is rebooted. This
update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Marcus Granado discovered that PAM incorrectly handled configuration files
with non-ASCII usernames. A remote attacker could use this flaw to cause a
denial of service, or possibly obtain login access with a different users
username. This issue only affected Ubuntu 8.04 LTS. (CVE-2009-0887)

It was discovered that the PAM pam_xauth, pam_env and pam_mail modules
incorrectly handled dropping privileges when performing operations. A local
attacker could use this flaw to read certain arbitrary files, and access
other sensitive information. (CVE-2010-3316, CVE-2010-3430, CVE-2010-3431,
CVE-2010-3435)

It was discovered that the PAM pam_namespace module incorrectly cleaned the
environment during execution of the namespace.init script. A local attacker
could use this flaw to possibly gain privileges. (CVE-2010-3853)

It was discovered that the PAM pam_xauth module incorrectly handled certain
failures. A local attacker could use this flaw to delete certain unintended
files. (CVE-2010-4706)

It was discovered that the PAM pam_xauth module incorrectly verified
certain file properties. A local attacker could use this flaw to cause a
denial of service. (CVE-2010-4707)

Update instructions:

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

Ubuntu 11.04:
libpam-modules 1.1.2-2ubuntu8.3
libpam0g 1.1.2-2ubuntu8.3

Ubuntu 10.10:
libpam-modules 1.1.1-4ubuntu2.3
libpam0g 1.1.1-4ubuntu2.3

Ubuntu 10.04 LTS:
libpam-modules 1.1.1-2ubuntu5.3
libpam0g 1.1.1-2ubuntu5.3

Ubuntu 8.04 LTS:
libpam-modules 0.99.7.1-5ubuntu6.4
libpam0g 0.99.7.1-5ubuntu6.4

In general, a standard system update will make all the necessary changes.

References:
https://launchpad.net/bugs/790538

Package Information:
https://launchpad.net/ubuntu/+source/pam/1.1.2-2ubuntu8.3
https://launchpad.net/ubuntu/+source/pam/1.1.1-4ubuntu2.3
https://launchpad.net/ubuntu/+source/pam/1.1.1-2ubuntu5.3
https://launchpad.net/ubuntu/+source/pam/0.99.7.1-5ubuntu6.4


Login or Register to add favorites

File Archive:

April 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Apr 1st
    10 Files
  • 2
    Apr 2nd
    26 Files
  • 3
    Apr 3rd
    40 Files
  • 4
    Apr 4th
    6 Files
  • 5
    Apr 5th
    26 Files
  • 6
    Apr 6th
    0 Files
  • 7
    Apr 7th
    0 Files
  • 8
    Apr 8th
    22 Files
  • 9
    Apr 9th
    14 Files
  • 10
    Apr 10th
    10 Files
  • 11
    Apr 11th
    13 Files
  • 12
    Apr 12th
    14 Files
  • 13
    Apr 13th
    0 Files
  • 14
    Apr 14th
    0 Files
  • 15
    Apr 15th
    30 Files
  • 16
    Apr 16th
    10 Files
  • 17
    Apr 17th
    22 Files
  • 18
    Apr 18th
    45 Files
  • 19
    Apr 19th
    8 Files
  • 20
    Apr 20th
    0 Files
  • 21
    Apr 21st
    0 Files
  • 22
    Apr 22nd
    11 Files
  • 23
    Apr 23rd
    68 Files
  • 24
    Apr 24th
    0 Files
  • 25
    Apr 25th
    0 Files
  • 26
    Apr 26th
    0 Files
  • 27
    Apr 27th
    0 Files
  • 28
    Apr 28th
    0 Files
  • 29
    Apr 29th
    0 Files
  • 30
    Apr 30th
    0 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