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Ubuntu 16.04 LTS : ubuntu-core-launcher vulnerability (USN-2956-1)

critical Nessus Plugin ID 90827

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-2956-1 advisory.

 Zygmunt Krynicki discovered that ubuntu-core-launcher did not properly sanitize its input and contained a logic error when determining the mountpoint of bind mounts when using snaps on Ubuntu classic systems (eg, traditional desktop and server). If a user were tricked into installing a malicious snap with a crafted snap name, an attacker could perform a delayed attack to steal data or execute code within the security context of another snap. This issue did not affect Ubuntu Core systems.

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 ubuntu-core-launcher package.

See Also

https://ubuntu.com/security/notices/USN-2956-1

Plugin Details

Severity: Critical

ID: 90827

File Name: ubuntu_USN-2956-1.nasl

Version: 2.12

Type: local

Agent: unix

Published: 5/2/2016

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2016-1580

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-launcher, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/29/2016

Vulnerability Publication Date: 5/13/2016

Reference Information

CVE: CVE-2016-1580

USN: 2956-1