Rechercher
Contactez-nous Suivez-nous sur Twitter En francais English Language
 

Freely subscribe to our NEWSLETTER

Newsletter FR

Newsletter EN

Vulnérabilités

Unsubscribe

Vigil@nce: Xen, access to /local/domain

December 2008 by Vigil@nce

An attacker located in a guest system can write to some files of
/local/domain.

 Gravity: 1/4
 Consequences: data creation/edition, denial of service of service
 Provenance: user account
 Means of attack: no proof of concept, no attack
 Ability of attacker: expert (4/4)
 Confidence: confirmed by the editor (5/5)
 Diffusion of the vulnerable configuration: high (3/3)
 Creation date: 19/12/2008

IMPACTED PRODUCTS

 Citrix XenServer
 Unix - plateform

DESCRIPTION

The Xen /local/domain path contains information files:
/local/domain/(id)/vm
/local/domain/(id)/cpu
/local/domain/(id)/console/vnc-port
/local/domain/(id)/console/tty
etc.

Due to a restriction error, an attacker in a guest system can
write in some of these files.

An attacker can for example write to /local/domain/(id)/console/tty
in order to change the tty path. The administrator then connects
to the bad tty. If the tty name is invalid, the administrator
cannot connect to it.

This vulnerability can therefore lead to a denial of service.

CHARACTERISTICS

 Identifiers: 464817, CVE-2008-4405, VIGILANCE-VUL-8346
 Url: http://vigilance.fr/vulnerability/8346


See previous articles

    

See next articles


Your podcast Here

New, you can have your Podcast here. Contact us for more information ask:
Marc Brami
Phone: +33 1 40 92 05 55
Mail: ipsimp@free.fr

All new podcasts