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Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2446-1)

high Nessus Plugin ID 80032

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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-2446-1 advisory.

 Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment (SS) register in the x86 architecture. A local attacker could exploit this flaw to gain administrative privileges. (CVE-2014-9322)

 An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel.
 (CVE-2014-8134)

 Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). (CVE-2014-7826)

 A flaw in the handling of malformed ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. A remote attacker could exploit this flaw to cause a denial of service (system crash). (CVE-2014-3673)

 A flaw in the handling of duplicate ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. A remote attacker could exploit this flaw to cause a denial of service (panic). (CVE-2014-3687)

 It was discovered that excessive queuing by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel can cause memory pressure. A remote attacker could exploit this flaw to cause a denial of service. (CVE-2014-3688)

 Rabin Vincent, Robert Swiecki, Russell Kinglaw discovered a flaw in how the perf subsystem of the Linux kernel handles private systecall numbers. A local user could exploit this to cause a denial of service (OOPS) or bypass ASLR protections via a crafted application. (CVE-2014-7825)

 The KVM (kernel virtual machine) subsystem of the Linux kernel miscalculates the number of memory pages during the handling of a mapping failure. A guest OS user could exploit this to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges.
 (CVE-2014-8369)

 Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment (SS) register on the x86 architecture. A local attacker could exploit this flaw to cause a denial of service (panic). (CVE-2014-9090)

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-2446-1

Plugin Details

Severity: High

ID: 80032

File Name: ubuntu_USN-2446-1.nasl

Version: 1.21

Type: local

Agent: unix

Published: 12/15/2014

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2014-9322

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-43-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: 12/12/2014

Vulnerability Publication Date: 11/10/2014

Reference Information

CVE: CVE-2014-3673, CVE-2014-3687, CVE-2014-3688, CVE-2014-7825, CVE-2014-7826, CVE-2014-8134, CVE-2014-8369, CVE-2014-9090, CVE-2014-9322

BID: 70749, 70766, 70768, 70883, 70971, 70972, 71250

USN: 2446-1