7.2 - GLSA-201203-06

Executive Summary

This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.

Summary
Title	sudo: Privilege escalation

Informations
Name	GLSA-201203-06	First vendor Publication	2012-03-06
Vendor	Gentoo	Last vendor Modification	2012-03-06
Severity (Vendor)	High	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:C/I:C/A:C)
Cvss Base Score	7.2	Attack Range	Local
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	3.9	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Two vulnerabilities have been discovered in sudo, allowing local attackers to possibly gain escalated privileges.

Background

sudo allows a system administrator to give users the ability to run commands as other users.

Description

Two vulnerabilities have been discovered in sudo:

* When the sudoers file is configured with a Runas group, sudo does not prompt for a password when changing to the new group (CVE-2011-0010).
* A format string vulnerability exists in the "sudo_debug()" function (CVE-2012-0809).

Impact

A local attacker could possibly gain the ability to run arbitrary commands with the privileges of other users or groups, including root.

Workaround

There is no known workaround at this time.

Resolution

All sudo users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.3_p2"

References

[ 1 ] CVE-2011-0010 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0010
[ 2 ] CVE-2012-0809 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0809

Availability

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

http://security.gentoo.org/glsa/glsa-201203-06.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201203-06.xml

CWE : Common Weakness Enumeration

%	Id	Name
50 %	CWE-264	Permissions, Privileges, and Access Controls
50 %	CWE-134	Uncontrolled Format String (CWE/SANS Top 25)

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13675

Oval ID:	oval:org.mitre.oval:def:13675
Title:	USN-1046-1 -- sudo vulnerability
Description:	Alexander Kurtz discovered that sudo would not prompt for a password when a group was specified in the Runas_Spec. A local attacker could exploit this to execute arbitrary code as the specified group if sudo was configured to allow the attacker to use a program as this group. The group Runas_Spec is not used in the default installation of Ubuntu.
Family:	unix	Class:	patch
Reference(s):	USN-1046-1 CVE-2011-0010	Version:	5
Platform(s):	Ubuntu 10.10 Ubuntu 9.10 Ubuntu 10.04	Product(s):	sudo
Definition Synopsis:
Release section Ubuntu 10.10 is installed AND Supported architectures section Installed architecture is i386 AND Installed architecture is armel AND Installed architecture is amd64 AND Installed architecture is powerpc AND Packages section sudo-ldap DPKG is earlier than 1.7.2p7-1ubuntu2.1 AND sudo DPKG is earlier than 1.7.2p7-1ubuntu2.1 OR Release section Ubuntu 9.10 is installed AND Supported architectures section Installed architecture is amd64 AND Installed architecture is i386 AND Installed architecture is powerpc AND Installed architecture is sparc AND Installed architecture is armel AND Installed architecture is lpia AND Packages section sudo-ldap DPKG is earlier than 1.7.0-1ubuntu2.6 AND sudo DPKG is earlier than 1.7.0-1ubuntu2.6 OR Release section Ubuntu 10.04 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is armel AND Installed architecture is amd64 AND Installed architecture is powerpc AND Packages section sudo-ldap DPKG is earlier than 1.7.2p1-1ubuntu5.3 AND sudo DPKG is earlier than 1.7.2p1-1ubuntu5.3

Definition Id: oval:org.mitre.oval:def:20941

Oval ID:	oval:org.mitre.oval:def:20941
Title:	RHSA-2012:0309: sudo security and bug fix update (Low)
Description:	check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command.
Family:	unix	Class:	patch
Reference(s):	RHSA-2012:0309-03 CVE-2011-0010	Version:	4
Platform(s):	Red Hat Enterprise Linux 5	Product(s):	sudo
Definition Synopsis:
The operating system installed on the system is Red Hat Enterprise Linux 5 AND sudo is earlier than 0:1.7.2p1-13.el5

Definition Id: oval:org.mitre.oval:def:21380

Oval ID:	oval:org.mitre.oval:def:21380
Title:	RHSA-2011:0599: sudo security and bug fix update (Low)
Description:	check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command.
Family:	unix	Class:	patch
Reference(s):	RHSA-2011:0599-01 CVE-2011-0010	Version:	4
Platform(s):	Red Hat Enterprise Linux 6	Product(s):	sudo
Definition Synopsis:
sudo is earlier than 0:1.7.4p5-5.el6 AND The operating system installed on the system is Red Hat Enterprise Linux 6

Definition Id: oval:org.mitre.oval:def:22719

Oval ID:	oval:org.mitre.oval:def:22719
Title:	ELSA-2011:0599: sudo security and bug fix update (Low)
Description:	check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command.
Family:	unix	Class:	patch
Reference(s):	ELSA-2011:0599-01 CVE-2011-0010	Version:	6
Platform(s):	Oracle Linux 6	Product(s):	sudo
Definition Synopsis:
sudo is earlier than 0:1.7.4p5-5.el6 AND Oracle Linux 6.x

Definition Id: oval:org.mitre.oval:def:23269

Oval ID:	oval:org.mitre.oval:def:23269
Title:	ELSA-2012:0309: sudo security and bug fix update (Low)
Description:	check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command.
Family:	unix	Class:	patch
Reference(s):	ELSA-2012:0309-03 CVE-2011-0010	Version:	6
Platform(s):	Oracle Linux 5	Product(s):	sudo
Definition Synopsis:
Oracle Linux 5.x AND sudo is earlier than 0:1.7.2p1-13.el5

Definition Id: oval:org.mitre.oval:def:27474

Oval ID:	oval:org.mitre.oval:def:27474
Title:	DEPRECATED: ELSA-2012-0309 -- sudo security and bug fix update (low)
Description:	[1.7.2p1-13] - patch: parse ldap.conf more closely to nss_ldap Resolves: rhbz#750318 [1.7.2p1-12] - added patch for CVE-2011-0010 Resolves: rhbz#757157 [1.7.2p1-11] - backported selinux support from 1.7.4p5 (#477185, #673157) - fixed bug in Runas_Spec group matching (#627543) - disable 'sudo -l' output word wrapping if the output is piped (#697111) - fixed overwriting of errno after execve failure (#673157) - fixed segmentation fault (#673072) - add a sudoers entry to the nsswitch.conf file on install (and delete it on uninstall) (#617061) Resolves: rhbz#697111 Resolves: rhbz#673157 Resolves: rhbz#673072 Resolves: rhbz#627543 Resolves: rhbz#617061 Resolves: rhbz#477185
Family:	unix	Class:	patch
Reference(s):	ELSA-2012-0309 CVE-2011-0010	Version:	4
Platform(s):	Oracle Linux 5	Product(s):	sudo
Definition Synopsis:
Oracle Linux 5.x AND sudo is earlier than 0:1.7.2p1-13.el5

Definition Id: oval:org.mitre.oval:def:28045

Oval ID:	oval:org.mitre.oval:def:28045
Title:	DEPRECATED: ELSA-2011-0599 -- sudo security and bug fix update (low)
Description:	[1.7.4p5-5] - patch: log failed user role changes Resolves: rhbz#665131 [1.7.4p5-4] - added #includedir /etc/sudoers.d to sudoers Resolves: rhbz#615087 [1.7.4p5-3] - added !visiblepw option to sudoers Resolves: rhbz#688640 [1.7.4p5-2] - added patch for rhbz#665131 Resolves: rhbz#665131 [1.7.4p5-1] - rebase to latest stable version - sudo now uses /var/db/sudo for timestamps - new command available: sudoreplay - use native audit support - sync configuration paths with the nss_ldap package Resolves: rhbz#615087 Resolves: rhbz#652726 Resolves: rhbz#634159 Resolves: rhbz#603823
Family:	unix	Class:	patch
Reference(s):	ELSA-2011-0599 CVE-2011-0010	Version:	4
Platform(s):	Oracle Linux 6	Product(s):	sudo
Definition Synopsis:
Oracle Linux 6.x AND sudo is earlier than 0:1.7.4p5-5.el6

CPE : Common Platform Enumeration

Type	Description	Count
Application	Todd Miller Sudo cpe:2.3:a:todd_miller:sudo:1.8.3p1:::::::* cpe:2.3:a:todd_miller:sudo:1.8.3:::::::* cpe:2.3:a:todd_miller:sudo:1.8.2:::::::* cpe:2.3:a:todd_miller:sudo:1.8.1p2:::::::* cpe:2.3:a:todd_miller:sudo:1.8.1p1:::::::* cpe:2.3:a:todd_miller:sudo:1.8.1:::::::* cpe:2.3:a:todd_miller:sudo:1.8.0:::::::* cpe:2.3:a:todd_miller:sudo:1.7.4p4:::::::* cpe:2.3:a:todd_miller:sudo:1.7.4p3:::::::* cpe:2.3:a:todd_miller:sudo:1.7.4p2:::::::* cpe:2.3:a:todd_miller:sudo:1.7.4p1:::::::* cpe:2.3:a:todd_miller:sudo:1.7.4:::::::* cpe:2.3:a:todd_miller:sudo:1.7.3b1:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p7:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p6:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p5:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p4:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p3:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p2:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2p1:::::::* cpe:2.3:a:todd_miller:sudo:1.7.2:::::::* cpe:2.3:a:todd_miller:sudo:1.7.1:::::::* cpe:2.3:a:todd_miller:sudo:1.7.0:::::::*	23

ExploitDB Exploits

id	Description
2013-05-01	sudo v1.8.0-1.8.3p1 (sudo_debug) - Root Exploit + glibc FORTIFY_SOURCE Bypass

OpenVAS Exploits

Date	Description
2012-06-06	Name : RedHat Update for sudo RHSA-2011:0599-01 File : nvt/gb_RHSA-2011_0599-01_sudo.nasl
2012-04-02	Name : Fedora Update for sudo FEDORA-2012-1028 File : nvt/gb_fedora_2012_1028_sudo_fc16.nasl
2012-03-12	Name : Gentoo Security Advisory GLSA 201203-06 (sudo) File : nvt/glsa_201203_06.nasl
2012-02-21	Name : RedHat Update for sudo RHSA-2012:0309-03 File : nvt/gb_RHSA-2012_0309-03_sudo.nasl
2012-02-12	Name : FreeBSD Ports: sudo File : nvt/freebsd_sudo10.nasl
2011-01-24	Name : FreeBSD Ports: sudo File : nvt/freebsd_sudo9.nasl
2011-01-24	Name : Fedora Update for sudo FEDORA-2011-0455 File : nvt/gb_fedora_2011_0455_sudo_fc13.nasl
2011-01-24	Name : Mandriva Update for sudo MDVSA-2011:018 (sudo) File : nvt/gb_mandriva_MDVSA_2011_018.nasl
2011-01-21	Name : Fedora Update for sudo FEDORA-2011-0470 File : nvt/gb_fedora_2011_0470_sudo_fc14.nasl
2011-01-21	Name : Ubuntu Update for sudo vulnerability USN-1046-1 File : nvt/gb_ubuntu_USN_1046_1.nasl
0000-00-00	Name : Slackware Advisory SSA:2011-041-05 sudo File : nvt/esoft_slk_ssa_2011_041_05.nasl

Open Source Vulnerability Database (OSVDB)

Id	Description
70400	sudo check.c Runas Group Authentication Bypass sudo contains a logic error that prevents the program from properly restricting changes of the group ID. This may allow a local attacker to use the 'sudo -g' command to bypass authentication while changing group IDs.

Nessus® Vulnerability Scanner

Date	Description
2014-11-17	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0168.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_3_sudo-110114.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : openSUSE-2012-73.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing a security update. File : oraclelinux_ELSA-2012-0309.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20120221_sudo_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110519_sudo_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2012-03-06	Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201203-06.nasl - Type : ACT_GATHER_INFO
2012-02-21	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0309.nasl - Type : ACT_GATHER_INFO
2012-02-01	Name : The remote Fedora host is missing a security update. File : fedora_2012-1028.nasl - Type : ACT_GATHER_INFO
2012-01-31	Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_7c920bb74b5f11e19f4700e0815b8da8.nasl - Type : ACT_GATHER_INFO
2011-05-20	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0599.nasl - Type : ACT_GATHER_INFO
2011-05-05	Name : The remote openSUSE host is missing a security update. File : suse_11_2_sudo-110114.nasl - Type : ACT_GATHER_INFO
2011-02-11	Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2011-041-05.nasl - Type : ACT_GATHER_INFO
2011-01-28	Name : The remote Mandriva Linux host is missing a security update. File : mandriva_MDVSA-2011-018.nasl - Type : ACT_GATHER_INFO
2011-01-24	Name : The remote Fedora host is missing a security update. File : fedora_2011-0455.nasl - Type : ACT_GATHER_INFO
2011-01-21	Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1046-1.nasl - Type : ACT_GATHER_INFO
2011-01-19	Name : The remote Fedora host is missing a security update. File : fedora_2011-0470.nasl - Type : ACT_GATHER_INFO
2011-01-14	Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_908f4cf21e8b11e0a587001b77d09812.nasl - Type : ACT_GATHER_INFO

Alert History

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Date	Informations
2014-02-17 11:37:14	Multiple Updates

Global Informations

Type	Count
CWE ID(s)	2
Oval ID(s)	7
CPE ID(s)	23
osvdb(s)	1
ExploitDB Exploit(s)	1
Openvas Exploit(s)	11
Nessus® Exploit(s)	18

	Related
7.2	CVE-2012-0809
4.4	CVE-2011-0010
Info : listing not affected by your CVSS Env Score

Same Subject	Severity
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