Ubuntu 16.04 LTS / 18.04 LTS / 18.10 / 19.04 : gvfs vulnerabilities (USN-4053-1)

Medium Nessus Plugin ID 126598

Synopsis

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

Description

It was discovered that GVfs incorrectly handled the admin backend.
Files created or moved by the admin backend could end up with the wrong ownership information, contrary to expectations. This issue only affected Ubuntu 18.04 LTS, Ubuntu 18.10, and Ubuntu 19.04.
(CVE-2019-12447, CVE-2019-12448, CVE-2019-12449)

It was discovered that GVfs incorrectly handled authentication on its private D-Bus socket. A local attacker could possibly connect to this socket and issue D-Bus calls. (CVE-2019-12795).

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 gvfs and / or gvfs-backends packages.

See Also

https://usn.ubuntu.com/4053-1/

Plugin Details

Severity: Medium

ID: 126598

File Name: ubuntu_USN-4053-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2019/07/10

Updated: 2019/11/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.8

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

CVSS v3.0

Base Score: 8.1

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:gvfs, p-cpe:/a:canonical:ubuntu_linux:gvfs-backends, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10, cpe:/o:canonical:ubuntu_linux:19.04

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

Patch Publication Date: 2019/07/09

Vulnerability Publication Date: 2019/05/29

Reference Information

CVE: CVE-2019-12447, CVE-2019-12448, CVE-2019-12449, CVE-2019-12795

USN: 4053-1