CVE-2016-9380
Published: 23 January 2017
The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file.
Notes
| Author | Note |
|---|---|
| mdeslaur | This is XSA-198 |
| tyhicks | issue present in xen-utils-4.x binary packages which are in universe |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
xen Launchpad, Ubuntu, Debian |
precise |
Released
(4.1.6.1-0ubuntu0.12.04.13)
|
| trusty |
Released
(4.4.2-0ubuntu0.14.04.9)
|
|
| upstream |
Needed
|
|
| xenial |
Released
(4.6.0-1ubuntu4.3)
|
|
| yakkety |
Released
(4.7.0-0ubuntu2.1)
|
|
| zesty |
Released
(4.8.0-1ubuntu1)
|
|
| Binaries built from this source package are in Universe and so are supported by the community. | ||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |