Ubuntu 16.04 LTS : linux-hwe vulnerabilities (USN-3443-2)

medium Nessus Plugin ID 103776
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VPR Score: 3.6

Synopsis

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

Description

USN-3443-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.

It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-1000255)

Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14106).

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.

See Also

https://usn.ubuntu.com/3443-2/

Plugin Details

Severity: Medium

ID: 103776

File Name: ubuntu_USN-3443-2.nasl

Version: 3.9

Type: local

Agent: unix

Published: 10/11/2017

Updated: 9/18/2019

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS v2.0

Base Score: 6.6

Temporal Score: 4.9

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 5.5

Temporal Score: 4.8

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.10-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.10-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.10-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-16.04, cpe:/o:canonical:ubuntu_linux:16.04

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/10/2017

Vulnerability Publication Date: 9/1/2017

Reference Information

CVE: CVE-2017-1000255, CVE-2017-14106

USN: 3443-2