Vulnerability CVE-2015-1328

Vulnerability Name:

CVE-2015-1328 (CCN-103882)

Assigned:

2015-06-16

Published:

2015-06-16

Updated:

2017-09-21

Summary:

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.

CVSS v3 Severity:

7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

9.3 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
5.9 Medium (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
5.9 Medium (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-264

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2015-1328

Source: CCN
Type: Pivotal Web site
CVE-2015-1328 - overlayfs privilege escalation

Source: CCN
Type: oss-security Mailing List, Tue, 16 Jun 2015 09:17:28 +0900
CVE-2015-1328: incorrect permission checks in overlayfs, ubuntu local root

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20150616 CVE-2015-1328: incorrect permission checks in overlayfs, ubuntu local root

Source: EXPLOIT-DB
Type: Exploit, VDB Entry
40688

Source: BID
Type: Third Party Advisory, VDB Entry
75206

Source: XF
Type: UNKNOWN
ubuntu-overlayfs-priv-esc(103882)

Source: CCN
Type: Ubuntu GIT Repository
UBUNTU: SAUCE: Overlayfs: allow unprivileged mounts

Source: CCN
Type: Packet Storm Security [06-16-2015]
Ubuntu 12.04 / 14.04 / 14.10 / 15.04 overlayfs Local Root

Source: CCN
Type: Packet Storm Security [11-01-2016]
Overlayfs Privilege Escalation

Source: CONFIRM
Type: Vendor Advisory
https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.html

Source: CONFIRM
Type: Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2015-1328

Source: EXPLOIT-DB
Type: UNKNOWN
37292

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [06-16-2015]

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [11-02-2016]

Vulnerable Configuration:

Configuration 1:

cpe:/o:canonical:ubuntu_linux:*:*:*:*:*:*:*:* (Version <= 15.04)

Configuration 2:

cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 3.19)

Configuration CCN 1:

cpe:/o:canonical:ubuntu:14.04:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.precise:def:20151328000	V	CVE-2015-1328 on Ubuntu 12.04 LTS (precise) - high.	2016-11-27
oval:com.ubuntu.trusty:def:20151328000	V	CVE-2015-1328 on Ubuntu 14.04 LTS (trusty) - high.	2016-11-27
oval:com.ubuntu.xenial:def:20151328000	V	CVE-2015-1328 on Ubuntu 16.04 LTS (xenial) - high.	2016-11-27
oval:com.ubuntu.xenial:def:201513280000000	V	CVE-2015-1328 on Ubuntu 16.04 LTS (xenial) - high.	2016-11-27

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