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Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2466-1)

critical Nessus Plugin ID 80513

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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-2466-1 advisory.

 A null pointer dereference flaw was discovered in the the Linux kernel's SCTP implementation when ASCONF is used. A remote attacker could exploit this flaw to cause a denial of service (system crash) via a malformed INIT chunk. (CVE-2014-7841)

 A race condition with MMIO and PIO transactions in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel was discovered. A guest OS user could exploit this flaw to cause a denial of service (guest OS crash) via a specially crafted application. (CVE-2014-7842)

 Milo Prchlk reported a flaw in how the ARM64 platform handles a single byte overflow in __clear_user.
 A local user could exploit this flaw to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary. (CVE-2014-7843)

 A stack buffer overflow was discovered in the ioctl command handling for the Technotrend/Hauppauge USB DEC devices driver. A local user could exploit this flaw to cause a denial of service (system crash) or possibly gain privileges. (CVE-2014-8884)

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-2466-1

Plugin Details

Severity: Critical

ID: 80513

File Name: ubuntu_USN-2466-1.nasl

Version: 1.15

Type: local

Agent: unix

Published: 1/14/2015

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: 5.8

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

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

CVSS Score Source: CVE-2014-8884

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

CVSS Score Source: CVE-2014-7841

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-44-generic-lpae

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: 1/13/2015

Vulnerability Publication Date: 11/29/2014

Reference Information

CVE: CVE-2014-7841, CVE-2014-7842, CVE-2014-7843, CVE-2014-8884

BID: 71078, 71081, 71082, 71097

USN: 2466-1