Ubuntu 15.04 : linux vulnerability (USN-2802-1)

medium Nessus Plugin ID 86812

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Synopsis

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

Description

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux kernel did not properly catch Alignment Check exceptions. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the host OS.

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 linux-image-3.19-generic, linux-image-3.19-generic-lpae and / or linux-image-3.19-lowlatency packages.

Plugin Details

Severity: Medium

ID: 86812

File Name: ubuntu_USN-2802-1.nasl

Version: 2.11

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 11/10/2015

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19-generic, cpe:/o:canonical:ubuntu_linux:15.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19-generic-lpae

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2015

Vulnerability Publication Date: 11/16/2015

Reference Information

CVE: CVE-2015-5307

USN: 2802-1

Detections

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