Detections
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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

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.

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

Plugin Details

Severity: Critical

ID: 122152

File Name: ubuntu_USN-3887-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 2/13/2019

Updated: 10/21/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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: p-cpe:/a:canonical:ubuntu_linux:snapd, p-cpe:/a:canonical:ubuntu_linux:snapd-xdg-open, p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-launcher, p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-snapd-units, p-cpe:/a:canonical:ubuntu_linux:ubuntu-snappy, p-cpe:/a:canonical:ubuntu_linux:ubuntu-snappy-cli, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:golang-github-snapcore-snapd-dev, p-cpe:/a:canonical:ubuntu_linux:golang-github-ubuntu-core-snappy-dev, p-cpe:/a:canonical:ubuntu_linux:snap-confine

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

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