Executive Summary

Summary
Title gnome-screensaver: Privilege escalation
Informations
Name GLSA-200804-12 First vendor Publication 2008-04-11
Vendor Gentoo Last vendor Modification 2008-04-11
Severity (Vendor) Normal 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:M/Au:N/C:N/I:N/A:C)
Cvss Base Score 4.7 Attack Range Local
Cvss Impact Score 6.9 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

gnome-screensaver allows local users to bypass authentication under certain configurations.

Background

gnome-screensaver is a screensaver, designed to integrate with the Gnome desktop, that can replace xscreensaver.

Description

gnome-screensaver incorrectly handles the results of the getpwuid()
function in the file src/setuid.c when using directory servers (like NIS) during a network outage, a similar issue to GLSA 200705-14.

Impact

A local user can crash gnome-xscreensaver by preventing network connectivity if the system uses a remote directory service for credentials such as NIS or LDAP, which will unlock the screen.

Workaround

There is no known workaround at this time.

Resolution

All gnome-screensaver users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=gnome-extra/gnome-screensaver-2.20.0-r3"

References

[ 1 ] CVE-2008-0887 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0887
[ 2 ] GLSA 200705-14 : http://www.gentoo.org/security/en/glsa/glsa-200705-14.xml

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200804-12.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200804-12.xml

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10813
 
Oval ID: oval:org.mitre.oval:def:10813
Title: gnome-screensaver before 2.22.1, when a remote authentication server is enabled, crashes upon an unlock attempt during a network outage, which allows physically proximate attackers to gain access to the locked session, a related issue to CVE-2007-1859.
Description: gnome-screensaver before 2.22.1, when a remote authentication server is enabled, crashes upon an unlock attempt during a network outage, which allows physically proximate attackers to gain access to the locked session, a related issue to CVE-2007-1859.
Family: unix Class: vulnerability
Reference(s): CVE-2008-0887
 Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Oracle Linux 5
 Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:17707
 
Oval ID: oval:org.mitre.oval:def:17707
Title: USN-669-1 -- gnome-screensaver vulnerabilities
Description: It was discovered that the notify feature in gnome-screensaver could let a local attacker read the clipboard contents of a locked session by using Ctrl-V.
Family: unix Class: patch
Reference(s): USN-669-1
CVE-2007-6389
CVE-2008-0887
 Version: 7
Platform(s): Ubuntu 6.06
Ubuntu 7.10
 Product(s): gnome-screensaver
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21852
 
Oval ID: oval:org.mitre.oval:def:21852
Title: ELSA-2008:0218: gnome-screensaver security update (Moderate)
Description: gnome-screensaver before 2.22.1, when a remote authentication server is enabled, crashes upon an unlock attempt during a network outage, which allows physically proximate attackers to gain access to the locked session, a related issue to CVE-2007-1859.
Family: unix Class: patch
Reference(s): ELSA-2008:0218-01
CVE-2008-0887
 Version: 6
Platform(s): Oracle Linux 5
 Product(s): gnome-screensaver
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22162
 
Oval ID: oval:org.mitre.oval:def:22162
Title: ELSA-2008:0197: gnome-screensaver security update (Moderate)
Description: gnome-screensaver before 2.22.1, when a remote authentication server is enabled, crashes upon an unlock attempt during a network outage, which allows physically proximate attackers to gain access to the locked session, a related issue to CVE-2007-1859.
Family: unix Class: patch
Reference(s): ELSA-2008:0197-01
CVE-2008-0887
 Version: 6
Platform(s): Oracle Linux 5
 Product(s): gnome-screensaver
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 5

OpenVAS Exploits

Date Description
2009-10-13 Name : SLES10: Security update for xscreensaver
File : nvt/sles10_xscreensaver.nasl
2009-10-10 Name : SLES9: Security update for xscreensaver
File : nvt/sles9p5031340.nasl
2009-04-09 Name : Mandriva Update for gnome-screensaver MDVSA-2008:132 (gnome-screensaver)
File : nvt/gb_mandriva_MDVSA_2008_132.nasl
2009-03-23 Name : Ubuntu Update for gnome-screensaver vulnerabilities USN-669-1
File : nvt/gb_ubuntu_USN_669_1.nasl
2009-03-06 Name : RedHat Update for gnome-screensaver RHSA-2008:0197-01
File : nvt/gb_RHSA-2008_0197-01_gnome-screensaver.nasl
2009-03-06 Name : RedHat Update for gnome-screensaver RHSA-2008:0218-01
File : nvt/gb_RHSA-2008_0218-01_gnome-screensaver.nasl
2009-02-17 Name : Fedora Update for gnome-screensaver FEDORA-2008-3017
File : nvt/gb_fedora_2008_3017_gnome-screensaver_fc8.nasl
2009-02-16 Name : Fedora Update for gnome-screensaver FEDORA-2008-2967
File : nvt/gb_fedora_2008_2967_gnome-screensaver_fc7.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200804-12 (gnome-screensaver)
File : nvt/glsa_200804_12.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
43986 gnome-screensaver NIS Authentication Method 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-2008-0197.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20080402_gnome_screensaver_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2010-01-06 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2008-0197.nasl - Type : ACT_GATHER_INFO
2009-09-24 Name : The remote SuSE 9 host is missing a security-related patch.
File : suse9_12174.nasl - Type : ACT_GATHER_INFO
2009-04-23 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-669-1.nasl - Type : ACT_GATHER_INFO
2009-04-23 Name : The remote Mandriva Linux host is missing a security update.
File : mandriva_MDVSA-2008-132.nasl - Type : ACT_GATHER_INFO
2008-07-28 Name : The remote openSUSE host is missing a security update.
File : suse_xscreensaver-5333.nasl - Type : ACT_GATHER_INFO
2008-07-28 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_xscreensaver-5334.nasl - Type : ACT_GATHER_INFO
2008-06-26 Name : The remote openSUSE host is missing a security update.
File : suse_gnome-screensaver-5172.nasl - Type : ACT_GATHER_INFO
2008-06-24 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_gnome-screensaver-5179.nasl - Type : ACT_GATHER_INFO
2008-06-18 Name : The remote openSUSE host is missing a security update.
File : suse_gnome-screensaver-5175.nasl - Type : ACT_GATHER_INFO
2008-05-22 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2008-0218.nasl - Type : ACT_GATHER_INFO
2008-04-17 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200804-12.nasl - Type : ACT_GATHER_INFO
2008-04-11 Name : The remote Fedora host is missing a security update.
File : fedora_2008-3017.nasl - Type : ACT_GATHER_INFO
2008-04-11 Name : The remote Fedora host is missing a security update.
File : fedora_2008-2967.nasl - Type : ACT_GATHER_INFO
2008-04-04 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2008-0197.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
2007-05-03 Name : The remote Mandrake Linux host is missing one or more security updates.
File : mandrake_MDKSA-2007-097.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
Date Informations
2014-02-17 11:35:44
  • Multiple Updates