advisories/10431.adv

type: security
subject: Updated qemu packages fix security vulnerability
CVE:
 - CVE-2013-2007
src:
  2:
   core:
     - qemu-1.0-6.5.mga2
  3:
   core:
     - qemu-1.2.0-8.1.mga3
description: |
  It was found that QEMU Guest Agent (the "qemu-ga" service) created
  certain files with world-writable permissions when run in daemon mode
  (the default mode). An unprivileged guest user could use this flaw to
  consume all free space on the partition containing the qemu-ga log file, or
  modify the contents of the log. When a UNIX domain socket transport was
  explicitly configured to be used (not the default), an unprivileged guest
  user could potentially use this flaw to escalate their privileges in the
  guest (CVE-2013-2007).

  Note:  This update requires manual action. Refer below for details.

  This update does not change the permissions of the existing log file or
  the UNIX domain socket. For these to be changed, stop the qemu-ga service,
  and then manually remove all "group" and "other" permissions on the
  affected files, or remove the files.

  Also note that after installing this update, files created by the
  guest-file-open QEMU Monitor Protocol (QMP) command will still continue to
  be created with world-writable permissions for backwards compatibility.
references:
 - https://bugs.mageia.org/show_bug.cgi?id=10431
 - https://rhn.redhat.com/errata/RHSA-2013-0896.html
ID: MGASA-2013-0169
1	type: security
2	subject: Updated qemu packages fix security vulnerability
3	CVE:
4	- CVE-2013-2007
5	src:
6	2:
7	core:
8	- qemu-1.0-6.5.mga2
9	3:
10	core:
11	- qemu-1.2.0-8.1.mga3
12	description: \|
13	It was found that QEMU Guest Agent (the "qemu-ga" service) created
14	certain files with world-writable permissions when run in daemon mode
15	(the default mode). An unprivileged guest user could use this flaw to
16	consume all free space on the partition containing the qemu-ga log file, or
17	modify the contents of the log. When a UNIX domain socket transport was
18	explicitly configured to be used (not the default), an unprivileged guest
19	user could potentially use this flaw to escalate their privileges in the
20	guest (CVE-2013-2007).
21
22	Note: This update requires manual action. Refer below for details.
23
24	This update does not change the permissions of the existing log file or
25	the UNIX domain socket. For these to be changed, stop the qemu-ga service,
26	and then manually remove all "group" and "other" permissions on the
27	affected files, or remove the files.
28
29	Also note that after installing this update, files created by the
30	guest-file-open QEMU Monitor Protocol (QMP) command will still continue to
31	be created with world-writable permissions for backwards compatibility.
32	references:
33	- https://bugs.mageia.org/show_bug.cgi?id=10431
34	- https://rhn.redhat.com/errata/RHSA-2013-0896.html
35	ID: MGASA-2013-0169