CVE-2016-9379

Publication date 23 January 2017

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

7.9 · High

Score breakdown

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file.

Read the notes from the security team

Status

Package Ubuntu Release Status
xen 17.04 zesty
Fixed 4.8.0-1ubuntu1
16.10 yakkety
Fixed 4.7.0-0ubuntu2.1
16.04 LTS xenial
Fixed 4.6.0-1ubuntu4.3
14.04 LTS trusty
Fixed 4.4.2-0ubuntu0.14.04.9
12.04 LTS precise
Fixed 4.1.6.1-0ubuntu0.12.04.13

Notes


mdeslaur

This is XSA-198


tyhicks

issue present in xen-utils-4.x binary packages which are in universe

Severity score breakdown

Parameter Value
Base score 7.9 · High
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N