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Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : snapd vulnerability (USN-3887-1)

critical Nessus Plugin ID 122152

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-3887-1 advisory.

 Chris Moberly discovered that snapd versions 2.28 through 2.37 incorrectly validated and parsed the remote socket address when performing access controls on its UNIX socket. A local attacker could use this to access privileged socket APIs and obtain administrator privileges. On Ubuntu systems with snaps installed, snapd typically will have already automatically refreshed itself to snapd 2.37.1 which is unaffected.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-3887-1

Plugin Details

Severity: Critical

ID: 122152

File Name: ubuntu_USN-3887-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 2/13/2019

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: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

CVSS Score Source: CVE-2019-7304

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-launcher, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:snapd-xdg-open, p-cpe:/a:canonical:ubuntu_linux:golang-github-ubuntu-core-snappy-dev, p-cpe:/a:canonical:ubuntu_linux:ubuntu-snappy-cli, p-cpe:/a:canonical:ubuntu_linux:snap-confine, p-cpe:/a:canonical:ubuntu_linux:snapd, p-cpe:/a:canonical:ubuntu_linux:golang-github-snapcore-snapd-dev, p-cpe:/a:canonical:ubuntu_linux:ubuntu-snappy, p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-snapd-units

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: 2/12/2019

Vulnerability Publication Date: 4/23/2019

Exploitable With

CANVAS (CANVAS)

Core Impact

Reference Information

CVE: CVE-2019-7304

USN: 3887-1