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Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2589-1)

high Nessus Plugin ID 83180

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2589-1 advisory.

 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 syscall via 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-2589-1

Plugin Details

Severity: High

ID: 83180

File Name: ubuntu_USN-2589-1.nasl

Version: 2.12

Type: local

Agent: unix

Published: 5/1/2015

Updated: 8/27/2024

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: 5.4

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

CVSS Score Source: CVE-2015-2666

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2015-2922

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-powerpc64-emb, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-36-powerpc-e500mc

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

Exploit Available: true

Exploit Ease: 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: 2589-1