CVE-2015-1328

2015-06-1500:00:00

ubuntu.com

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

26.5%

JSON

The overlayfs implementation in the linux (aka Linux kernel) package before
3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions
for file creation in the upper filesystem directory, which allows local
users to obtain root access by leveraging a configuration in which
overlayfs is permitted in an arbitrary mount namespace.

Bugs

<https://launchpad.net/bugs/1465400>

Notes

Author	Note
tyhicks	This CVE is specific to Ubuntu since Ubuntu allows overlayfs mounts inside of user namespaces
jdstrand	android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support

OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchlinux< 3.13.0-55.92UNKNOWN
ubuntu14.10noarchlinux< 3.16.0-41.55UNKNOWN
ubuntu15.04noarchlinux< 3.19.0-21.21UNKNOWN
ubuntu12.04noarchlinux-lts-trusty< 3.13.0-55.92~precise1UNKNOWN
ubuntu14.04noarchlinux-lts-utopic< 3.16.0-41.55~14.04.1UNKNOWN
ubuntu14.04noarchlinux-lts-vivid< 3.19.0-21.21~14.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	14.04	noarch	linux	< 3.13.0-55.92	UNKNOWN
ubuntu	14.10	noarch	linux	< 3.16.0-41.55	UNKNOWN
ubuntu	15.04	noarch	linux	< 3.19.0-21.21	UNKNOWN
ubuntu	12.04	noarch	linux-lts-trusty	< 3.13.0-55.92~precise1	UNKNOWN
ubuntu	14.04	noarch	linux-lts-utopic	< 3.16.0-41.55~14.04.1	UNKNOWN
ubuntu	14.04	noarch	linux-lts-vivid	< 3.19.0-21.21~14.04.1	UNKNOWN