Secunia CSI7
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading
Not critical

Xen XenStore Domain Backend Configuration Weakness

-

Release Date:  2008-10-01    Last Update:  2009-01-07    Views:  5,971

Secunia Advisory SA32064

Where:

Local system

Impact:

Security Bypass

Solution Status:

Vendor Workaround

Software:

CVE Reference(s):

Description


A weakness has been reported in Xen, which can be exploited by malicious, local users in a Xen DomU to bypass certain security restrictions.

The weakness is caused due to certain XenStore variables (e.g. /local/domain/<domid>/console/tty and /local/domain/<domid>/console/vnc-port) being writable from within the corresponding Xen DomU domain. This can be exploited to overwrite the variables, which may be processed with potentially unsafe values in applications running in Dom0.


Solution:
Fixed in the Mercurial repository.

Provided and/or discovered by:
Pascal Bouchareine

Original Advisory:
http://lists.xensource.com/archives/html/xen-devel/2008-09/msg00992.html
https://bugzilla.redhat.com/show_bug.cgi?id=464818

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Xen XenStore Domain Backend Configuration Weakness

No posts yet

-

You must be logged in to post a comment.



 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports
Webinars
Events
 About us
Careers
Memberships
Newsroom


 
© 2002-2014 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability