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Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3208-2)

high Nessus Plugin ID 97323

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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-3208-2 advisory.

 - The sg implementation in the Linux kernel through 4.9 does not properly restrict write operations in situations where the KERNEL_DS option is set, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device, related to block/bsg.c and drivers/scsi/sg.c. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-9576. (CVE-2016-10088)

 - The cgroup offline implementation in the Linux kernel through 4.8.11 mishandles certain drain operations, which allows local users to cause a denial of service (system hang) by leveraging access to a container environment for executing a crafted application, as demonstrated by trinity. (CVE-2016-9191)

 - arch/x86/kvm/vmx.c in the Linux kernel through 4.9 mismanages the #BP and #OF exceptions, which allows guest OS users to cause a denial of service (guest OS crash) by declining to handle an exception thrown by an L2 guest. (CVE-2016-9588)

 - The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a MOV SS, NULL selector instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application. (CVE-2017-2583)

 - arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt. (CVE-2017-2584)

 - The klsi_105_get_line_state function in drivers/usb/serial/kl5kusb105.c in the Linux kernel before 4.9.5 places uninitialized heap-memory contents into a log entry upon a failure to read the line status, which allows local users to obtain sensitive information by reading the log. (CVE-2017-5549)

 - The dccp_rcv_state_process function in net/dccp/input.c in the Linux kernel through 4.9.11 mishandles DCCP_PKT_REQUEST packet data structures in the LISTEN state, which allows local users to obtain root privileges or cause a denial of service (double free) via an application that makes an IPV6_RECVPKTINFO setsockopt system call. (CVE-2017-6074)

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-3208-2

Plugin Details

Severity: High

ID: 97323

File Name: ubuntu_USN-3208-2.nasl

Version: 3.13

Type: local

Agent: unix

Published: 2/22/2017

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: Critical

Score: 9.0

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2017-6074

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 8

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

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

CVSS Score Source: CVE-2017-2583

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-64-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: 2/22/2017

Vulnerability Publication Date: 11/28/2016

Exploitable With

Core Impact

Reference Information

CVE: CVE-2016-10088, CVE-2016-9191, CVE-2016-9588, CVE-2017-2583, CVE-2017-2584, CVE-2017-5549, CVE-2017-6074

USN: 3208-2