Executive Summary

Summary
Title xscreensaver security update
Informations
Name RHSA-2007:0322 First vendor Publication 2007-05-02
Vendor RedHat Last vendor Modification 2007-05-02
Severity (Vendor) Important Revision 01

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

Problem Description:

An updated xscreensaver package that fixes a security flaw is now available for Red Hat Enterprise Linux 2.1, 3, and 4.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64 Red Hat Linux Advanced Workstation 2.1 - ia64 Red Hat Enterprise Linux ES version 2.1 - i386 Red Hat Enterprise Linux WS version 2.1 - i386 Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Desktop version 3 - i386, x86_64 Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64 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:

XScreenSaver is a collection of screensavers.

Alex Yamauchi discovered a flaw in the way XScreenSaver verifies user passwords. When a system is using a remote directory service for login credentials, a local attacker may be able to cause a network outage causing XScreenSaver to crash, unlocking the screen. (CVE-2007-1859)

Users of XScreenSaver should upgrade to this updated package, which contains a backported patch to correct this issue.

4. Solution:

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

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188

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

237003 - CVE-2007-1859 xscreensaver authentication bypass

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2007-0322.html

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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Date Informations
2014-02-17 11:50:37
  • Multiple Updates