Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-2979-1)

high Nessus Plugin ID 91188

Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2979-1 advisory.

- Integer overflow in lib/asn1_decoder.c in the Linux kernel before 4.6 allows local users to gain privileges via crafted ASN.1 data. (CVE-2016-0758)

- The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvm_arch_vcpu data structure, and consequently obtain sensitive information or cause a denial of service (system crash), via a crafted ioctl call.
(CVE-2016-3713)

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-2979-1

Plugin Details

Severity: High

ID: 91188

File Name: ubuntu_USN-2979-1.nasl

Version: 2.15

Type: local

Agent: unix

Published: 5/17/2016

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2016-0758

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-22-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/16/2016

Vulnerability Publication Date: 6/27/2016

Reference Information

CVE: CVE-2016-0758, CVE-2016-3713

USN: 2979-1