Executive Summary

Summary
Title xen-3.0 vulnerability
Informations
Name USN-527-1 First vendor Publication 2007-10-05
Vendor Ubuntu Last vendor Modification 2007-10-05
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:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

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 7.04:
xen-utils-3.0 3.0.3-0ubuntu10.1

In general, a standard system upgrade is sufficient to affect the necessary changes.

Details follow:

Joris van Rantwijk discovered that the Xen host did not correctly validate the contents of a Xen guests's grug.conf file. Xen guest root users could exploit this to run arbitrary commands on the host when the guest system was rebooted.

Original Source

Url : http://www.ubuntu.com/usn/USN-527-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:11240
 
Oval ID: oval:org.mitre.oval:def:11240
Title: pygrub (tools/pygrub/src/GrubConf.py) in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest domain to execute arbitrary commands in domain 0 via a crafted grub.conf file whose contents are used in exec statements.
Description: pygrub (tools/pygrub/src/GrubConf.py) in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest domain to execute arbitrary commands in domain 0 via a crafted grub.conf file whose contents are used in exec statements.
Family: unix Class: vulnerability
Reference(s): CVE-2007-4993
 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:17613
 
Oval ID: oval:org.mitre.oval:def:17613
Title: USN-527-1 -- xen-3.0 vulnerability
Description: Joris van Rantwijk discovered that the Xen host did not correctly validate the contents of a Xen guests's grug.conf file.
Family: unix Class: patch
Reference(s): USN-527-1
CVE-2007-4993
 Version: 7
Platform(s): Ubuntu 7.04
 Product(s): xen-3.0
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22666
 
Oval ID: oval:org.mitre.oval:def:22666
Title: ELSA-2007:0323: xen security update (Important)
Description: pygrub (tools/pygrub/src/GrubConf.py) in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest domain to execute arbitrary commands in domain 0 via a crafted grub.conf file whose contents are used in exec statements.
Family: unix Class: patch
Reference(s): ELSA-2007:0323-01
CVE-2007-1320
CVE-2007-1321
CVE-2007-4993
 Version: 17
Platform(s): Oracle Linux 5
 Product(s): xen
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

OpenVAS Exploits

Date Description
2009-04-09 Name : Mandriva Update for xen MDKSA-2007:203 (xen)
File : nvt/gb_mandriva_MDKSA_2007_203.nasl
2009-03-23 Name : Ubuntu Update for xen-3.0 vulnerability USN-527-1
File : nvt/gb_ubuntu_USN_527_1.nasl
2009-02-27 Name : Fedora Update for xen FEDORA-2007-2270
File : nvt/gb_fedora_2007_2270_xen_fc7.nasl
2009-02-27 Name : Fedora Update for xen FEDORA-2007-2708
File : nvt/gb_fedora_2007_2708_xen_fc7.nasl
2009-02-27 Name : Fedora Update for xen FEDORA-2007-713
File : nvt/gb_fedora_2007_713_xen_fc6.nasl
2009-02-16 Name : Fedora Update for xen FEDORA-2008-2083
File : nvt/gb_fedora_2008_2083_xen_fc7.nasl
2008-01-17 Name : Debian Security Advisory DSA 1384-1 (xen-utils)
File : nvt/deb_1384_1.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
41340 Xen pygrub (tools/pygrub/src/GrubConf.py) Cross-Domain Arbitrary Command Exec...

Nessus® Vulnerability Scanner

Date Description
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2007-0323.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20071004_xen_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2010-01-06 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2007-0323.nasl - Type : ACT_GATHER_INFO
2008-02-29 Name : The remote Fedora host is missing a security update.
File : fedora_2008-2083.nasl - Type : ACT_GATHER_INFO
2007-11-10 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-527-1.nasl - Type : ACT_GATHER_INFO
2007-11-06 Name : The remote Fedora host is missing a security update.
File : fedora_2007-2270.nasl - Type : ACT_GATHER_INFO
2007-11-06 Name : The remote Fedora host is missing a security update.
File : fedora_2007-2708.nasl - Type : ACT_GATHER_INFO
2007-11-02 Name : The remote Mandrake Linux host is missing a security update.
File : mandrake_MDKSA-2007-203.nasl - Type : ACT_GATHER_INFO
2007-10-09 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-1384.nasl - Type : ACT_GATHER_INFO
2007-10-09 Name : The remote Fedora Core host is missing a security update.
File : fedora_2007-713.nasl - Type : ACT_GATHER_INFO
2007-10-03 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2007-0323.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2018-10-16 00:21:59
  • Multiple Updates
2014-02-17 12:04:41
  • Multiple Updates
2013-05-11 12:26:03
  • Multiple Updates