Executive Summary

Summary
Title xscreensaver vulnerability
Informations
Name USN-474-1 First vendor Publication 2007-06-12
Vendor Ubuntu Last vendor Modification 2007-06-12
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 6.06 LTS Ubuntu 6.10 Ubuntu 7.04

This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.

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

Ubuntu 6.06 LTS:
xscreensaver 4.23-4ubuntu8.1

Ubuntu 6.10:
xscreensaver 4.24-4ubuntu2.1

Ubuntu 7.04:
xscreensaver 4.24-5ubuntu2.1

After a standard system upgrade you need to restart your session to effect the necessary changes.

Details follow:

It was discovered that xscreensaver did not correctly validate the return values from network authentication systems such as LDAP or NIS. A local attacker could bypass a locked screen if they were able to interrupt network connectivity.

Original Source

Url : http://www.ubuntu.com/usn/USN-474-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:11459
 
Oval ID: oval:org.mitre.oval:def:11459
Title: XScreenSaver 4.10, when using a remote directory service for credentials, does not properly handle the results from the getpwuid function in drivers/lock.c when there is no network connectivity, which causes XScreenSaver to crash and unlock the screen and allows local users to bypass authentication.
Description: XScreenSaver 4.10, when using a remote directory service for credentials, does not properly handle the results from the getpwuid function in drivers/lock.c when there is no network connectivity, which causes XScreenSaver to crash and unlock the screen and allows local users to bypass authentication.
Family: unix Class: vulnerability
Reference(s): CVE-2007-1859
Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Red Hat Enterprise Linux 4
CentOS Linux 4
Oracle Linux 4
Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

OpenVAS Exploits

Date Description
2009-10-10 Name : SLES9: Security update for xscreensaver
File : nvt/sles9p5014905.nasl
2009-04-09 Name : Mandriva Update for xscreensaver MDKSA-2007:097 (xscreensaver)
File : nvt/gb_mandriva_MDKSA_2007_097.nasl
2009-03-23 Name : Ubuntu Update for xscreensaver vulnerability USN-474-1
File : nvt/gb_ubuntu_USN_474_1.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200705-14 (xscreensaver)
File : nvt/glsa_200705_14.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
35531 XScreenSaver getpwuid() Failed Network Authentication Screen Lock Bypass

Nessus® Vulnerability Scanner

Date Description
2013-07-12 Name : The remote Oracle Linux host is missing a security update.
File : oraclelinux_ELSA-2007-0322.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20070502_xscreensaver_on_SL3_0_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20070502_xscreensaver_on_SL4.nasl - Type : ACT_GATHER_INFO
2009-09-24 Name : The remote SuSE 9 host is missing a security-related patch.
File : suse9_11506.nasl - Type : ACT_GATHER_INFO
2007-12-13 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_xscreensaver-3241.nasl - Type : ACT_GATHER_INFO
2007-11-10 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-474-1.nasl - Type : ACT_GATHER_INFO
2007-10-17 Name : The remote openSUSE host is missing a security update.
File : suse_xscreensaver-3240.nasl - Type : ACT_GATHER_INFO
2007-05-16 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200705-14.nasl - Type : ACT_GATHER_INFO
2007-05-03 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2007-0322.nasl - Type : ACT_GATHER_INFO
2007-05-03 Name : The remote Mandrake Linux host is missing one or more security updates.
File : mandrake_MDKSA-2007-097.nasl - Type : ACT_GATHER_INFO
2007-05-03 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2007-0322.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 12:04:25
  • Multiple Updates