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CVE-2012-0055

Published: 18 January 2012

OverlayFS in the Linux kernel before 3.0.0-16.28, as used in Ubuntu 10.0.4 LTS and 11.10, is missing inode security checks which could allow attackers to bypass security restrictions and perform unauthorized actions.

From the Ubuntu Security Team

Andy Whitcroft discovered a that the Overlayfs filesystem was not doing the extended permission checks needed by cgroups and Linux Security Modules (LSMs). A local user could exploit this to by-pass security policy and access files that should not be accessible.

Notes

AuthorNote
jjohansen
removed https://launchpad.net/bugs/915941 link as it was causing
script to fail

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream Not vulnerable

hardy Not vulnerable

lucid Not vulnerable

maverick Not vulnerable

natty Not vulnerable

oneiric
Released (3.0.0-16.27)
precise Not vulnerable

quantal Not vulnerable

saucy Not vulnerable

trusty Not vulnerable

utopic Not vulnerable

vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

Patches:
Introduced by

549ffd5a07c9098a6a1c7a82e7fd731a132fc1a0

Fixed by local-2012-0055
linux-ec2
Launchpad, Ubuntu, Debian
upstream Not vulnerable

hardy Does not exist

lucid Not vulnerable

maverick Ignored
(end of life)
natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream Not vulnerable

hardy Does not exist

lucid Not vulnerable

maverick Not vulnerable

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
upstream Not vulnerable

lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected)
utopic Not vulnerable

vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

linux-gke
Launchpad, Ubuntu, Debian
upstream Not vulnerable

precise Does not exist

trusty Does not exist

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

linux-aws
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable

upstream Not vulnerable

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

linux-flo
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist
(trusty was not-affected)
upstream Not vulnerable

utopic Not vulnerable

vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

zesty Does not exist

linux-fsl-imx51
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

utopic Ignored
(end of life)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (3.0.0-16.28~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

saucy Does not exist

trusty Does not exist

upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Not vulnerable

saucy Does not exist

trusty Does not exist

upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream Not vulnerable

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable

upstream Not vulnerable

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mako
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected)
upstream Not vulnerable

utopic Not vulnerable

vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

quantal Does not exist

saucy Ignored

trusty Does not exist
(trusty was not-affected)
upstream Not vulnerable

utopic Not vulnerable

vivid Not vulnerable

wily Not vulnerable

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream Not vulnerable

vivid Does not exist

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream Not vulnerable

wily Does not exist

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

linux-ti-omap4
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

maverick Not vulnerable

natty Not vulnerable

oneiric
Released (3.0.0-1207.16)
precise Not vulnerable

quantal Not vulnerable

saucy Not vulnerable

trusty Does not exist

upstream Not vulnerable

utopic Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H