Xen 3.x - pygrub Local Authentication Bypass
| Reporter | Title | Published | Views | Family All 29 |
|---|---|---|---|---|
 | CentOS 5 : xen (CESA-2009:1472) | 6 Jan 201000:00 | – | nessus |
| MiracleLinux 3 : xen-3.0.3-94.1.1AXS3 (AXSA:2009-408:02) | 19 Jan 202600:00 | – | nessus |
| Oracle Linux 5 : xen (ELSA-2009-1472) | 12 Jul 201300:00 | – | nessus |
| RHEL 5 : xen (RHSA-2009:1472) | 2 Oct 200900:00 | – | nessus |
| Scientific Linux Security Update : xen on SL5.x i386/x86_64 | 1 Aug 201200:00 | – | nessus |
| openSUSE Security Update : xen-201004 (openSUSE-SU-2010:0293-1) | 26 May 201000:00 | – | nessus |
| SuSE 11 Security Update : Xen (SAT Patch Number 2230) | 2 Dec 201000:00 | – | nessus |
| SuSE 11 Security Update : Xen (SAT Patch Number 2230) | 2 Dec 201000:00 | – | nessus |
 | xen security update | 30 Oct 200914:44 | – | centos |
 | CVE-2009-3525 | 25 Sep 200900:00 | – | circl |
10
source: https://www.securityfocus.com/bid/36523/info
Xen is prone to a local authentication-bypass vulnerability.
A local attacker with physical access to an affected host can exploit this issue to bypass authentication and modify the 'grub.conf' file. This may aid in a complete compromise of the affected system.
Xen 3.0.3, 3.3.0, and 3.3.1 are affected; other versions may also be vulnerable.
xm create -c guest
press space bar to stop the grub count down
press e to edit
select the kernel line and press e
Append a "1" to the end of the kernel line and press return
press "b" to bootData
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09 May 2014 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 27.2
EPSS0.0124