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Ubuntu 16.04 LTS / 18.04 LTS : Apport vulnerabilities (USN-4315-1)

medium Nessus Plugin ID 135171

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4315-1 advisory.

 Maximilien Bourgeteau discovered that the Apport lock file was created with insecure permissions. This could allow a local attacker to escalate their privileges via a symlink attack. (CVE-2020-8831)

 Maximilien Bourgeteau discovered a race condition in Apport when setting crash report permissions. This could allow a local attacker to read arbitrary files via a symlink attack.

 (CVE-2020-8833)

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

Note that Nessus has not tested for these issues 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-4315-1

Plugin Details

Severity: Medium

ID: 135171

File Name: ubuntu_USN-4315-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 4/2/2020

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2020-8831

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python3-apport, p-cpe:/a:canonical:ubuntu_linux:apport-retrace, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python-problem-report, p-cpe:/a:canonical:ubuntu_linux:apport-noui, p-cpe:/a:canonical:ubuntu_linux:python-apport, p-cpe:/a:canonical:ubuntu_linux:apport-valgrind, p-cpe:/a:canonical:ubuntu_linux:dh-apport, p-cpe:/a:canonical:ubuntu_linux:apport-kde, p-cpe:/a:canonical:ubuntu_linux:apport, p-cpe:/a:canonical:ubuntu_linux:apport-gtk, p-cpe:/a:canonical:ubuntu_linux:python3-problem-report

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: 4/2/2020

Vulnerability Publication Date: 4/22/2020

Reference Information

CVE: CVE-2020-8831, CVE-2020-8833

USN: 4315-1