Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2588-1)

high Nessus Plugin ID 83179

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-2588-1 advisory.

- Stack-based buffer overflow in the get_matching_model_microcode function in arch/x86/kernel/cpu/microcode/intel_early.c in the Linux kernel before 4.0 allows context-dependent attackers to gain privileges by constructing a crafted microcode header and leveraging root privileges for write access to the initrd. (CVE-2015-2666)

- The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message. (CVE-2015-2922)

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-2588-1

Plugin Details

Severity: High

ID: 83179

File Name: ubuntu_USN-2588-1.nasl

Version: 2.12

Type: local

Agent: unix

Published: 5/1/2015

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-3.13.0-51-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-51-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/30/2015

Vulnerability Publication Date: 5/27/2015

Reference Information

CVE: CVE-2015-2666, CVE-2015-2922

BID: 73183, 74315

USN: 2588-1