Detections
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Ubuntu 17.10 : Linux kernel vulnerabilities (USN-3677-1)

high Nessus Plugin ID 110478

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Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1068)

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations.
An attacker could use this to specially craft an ext4 file system that caused a denial of service (system crash) when mounted.
(CVE-2018-1092)

It was discovered that a NULL pointer dereference existed in the RDS (Reliable Datagram Sockets) protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-7492)

It was discovered that the 802.11 software simulator implementation in the Linux kernel contained a memory leak when handling certain error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2018-8087)

Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code.
(CVE-2018-8781).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/3677-1/

Plugin Details

Severity: High

ID: 110478

File Name: ubuntu_USN-3677-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 6/12/2018

Updated: 5/11/2023

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

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

CVSS v3

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2, cpe:/o:canonical:ubuntu_linux:17.10

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

Patch Publication Date: 6/11/2018

Vulnerability Publication Date: 2/26/2018

Reference Information

CVE: CVE-2018-1068, CVE-2018-1092, CVE-2018-7492, CVE-2018-8087, CVE-2018-8781

USN: 3677-1