Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
[ GLSA 201612-10 ] libvirt
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index News & Announcements
View previous topic :: View next topic  
Author Message
GLSA
Advocate
Advocate


Joined: 12 May 2004
Posts: 2226

PostPosted: Sun Dec 04, 2016 3:26 pm    Post subject: [ GLSA 201612-10 ] libvirt Reply with quote

Gentoo Linux Security Advisory

Title: libvirt: Directory traversal (GLSA 201612-10)
Severity: normal
Exploitable: local
Date: December 04, 2016
Bug(s): #568870
ID: 201612-10

Synopsis

Libvirt is vulnerable to directory traversal when using Access
Control Lists (ACL).


Background

libvirt is a C toolkit for manipulating virtual machines.

Affected Packages

Package: app-emulation/libvirt
Vulnerable: < 1.2.21-r1
Unaffected: >= 1.2.21-r1
Architectures: All supported architectures


Description

Normally, only privileged users can coerce libvirt into creating or
opening existing files using the virStorageVol APIs; and such users
already have full privilege to create any domain XML.
But in the case of fine-grained ACLs, it is feasible that a user can be
granted storage_vol:create but not domain:write, and it violates
assumptions if such a user can abuse libvirt to access files outside of
the storage pool.


Impact

When fine-grained Access Control Lists (ACL) are in effect, an
authenticated local user with storage_vol:create permission but without
domain:write permission maybe able to create or access arbitrary files
outside of the storage pool.


Workaround

Don’t make use of fine-grained Access Control Lists (ACL) in libvirt;
In Gentoo, libvirt’s ACL support is disable by default unless you
enable the “policykit” USE flag.


Resolution

All libvirt users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=app-emulation/libvirt-1.2.21-r1"
   


References

CVE-2015-5313
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index News & Announcements All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum