N/A - USN-3887-1

Executive Summary

Summary
Title	snapd vulnerability

Informations
Name	USN-3887-1	First vendor Publication	2019-02-12
Vendor	Ubuntu	Last vendor Modification	2019-02-12
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

snapd could be made to run programs as an administrator.

Software Description: - snapd: Daemon and tooling that enable snap packages

Details:

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.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10:
snapd 2.35.5+18.10.1

Ubuntu 18.04 LTS:
snapd 2.34.2+18.04.1

Ubuntu 16.04 LTS:
snapd 2.34.2ubuntu0.1

Ubuntu 14.04 LTS:
snapd 2.34.2~14.04.1

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3887-1
CVE-2019-7304, https://launchpad.net/bugs/1813365

Package Information:
https://launchpad.net/ubuntu/+source/snapd/2.35.5+18.10.1
https://launchpad.net/ubuntu/+source/snapd/2.34.2+18.04.1
https://launchpad.net/ubuntu/+source/snapd/2.34.2ubuntu0.1
https://launchpad.net/ubuntu/+source/snapd/2.34.2~14.04.1