Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3234-2)

Ubuntu Security Notice (C) 2017 Canonical, Inc. / NASL script (C) 2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

USN-3234-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

Ralf Spenneberg discovered that the ext4 implementation in the Linux
kernel did not properly validate meta block groups. An attacker with
physical access could use this to specially craft an ext4 image that
causes a denial of service (system crash). (CVE-2016-10208)

It was discovered that the Linux kernel did not clear the setgid bit
during a setxattr call on a tmpfs filesystem. A local attacker could
use this to gain elevated group privileges. (CVE-2017-5551).

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.

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 4.0
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 97779 ()

Bugtraq ID:

CVE ID: CVE-2016-10208
CVE-2017-5551

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