Ubuntu 14.04 LTS : linux-lts-wily vulnerability (USN-2858-2)

High Nessus Plugin ID 87760


The remote Ubuntu host is missing one or more security-related patches.


Nathan Williams discovered that overlayfs in the Linux kernel incorrectly handled setattr operations. A local unprivileged attacker could use this to create files with administrative permission attributes and execute arbitrary code with elevated privileges.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected linux-image-4.2-generic, linux-image-4.2-generic-lpae and / or linux-image-4.2-lowlatency packages.

Plugin Details

Severity: High

ID: 87760

File Name: ubuntu_USN-2858-2.nasl

Version: $Revision: 2.10 $

Type: local

Agent: unix

Published: 2016/01/06

Modified: 2016/12/01

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.2

Temporal Score: 6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND


Base Score: 6.7

Temporal Score: 6.2

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:X

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-lowlatency, cpe:/o:canonical:ubuntu_linux:14.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/01/05

Exploitable With


Core Impact

Metasploit (Overlayfs Privilege Escalation)

Reference Information

CVE: CVE-2015-8660

OSVDB: 132260

USN: 2858-2