Ubuntu 14.10 : linux vulnerabilities (USN-2590-1)

medium Nessus Plugin ID 83181

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Synopsis

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

Description

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service (host crash). (CVE-2015-2150)

A stack overflow was discovered in the the microcode loader for the intel x86 platform. A local attacker could exploit this flaw to cause a denial of service (kernel crash) or to potentially execute code with kernel privileges. (CVE-2015-2666)

A privilege escalation was discovered in the fork syscal vi the int80 entry on 64 bit kernels with 32 bit emulation support. An unprivileged local attacker could exploit this flaw to increase their privileges on the system. (CVE-2015-2830)

It was discovered that the Linux kernel's IPv6 networking stack has a flaw that allows using route advertisement (RA) messages to set the 'hop_limit' to values that are too low. An unprivileged attacker on a local network could exploit this flaw to cause a denial of service (IPv6 messages dropped). (CVE-2015-2922).

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-3.16-generic, linux-image-3.16-generic-lpae and / or linux-image-3.16-lowlatency packages.

Plugin Details

Severity: Medium

ID: 83181

File Name: ubuntu_USN-2590-1.nasl

Version: 2.11

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 5/1/2015

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: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16-generic-lpae, cpe:/o:canonical:ubuntu_linux:14.10, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16-generic

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2015

Vulnerability Publication Date: 3/12/2015

Reference Information

CVE: CVE-2015-2150, CVE-2015-2666, CVE-2015-2830, CVE-2015-2922

BID: 73014, 73183, 73699, 74315

USN: 2590-1

Detections

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