Debian DLA-2336-1 : firejail security update

critical Nessus Plugin ID 139756

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Synopsis

The remote Debian host is missing a security update.

Description

Tim Starling discovered two vulnerabilities in firejail, a sandbox program to restrict the running environment of untrusted applications.

CVE-2020-17367

It was reported that firejail does not respect the end-of-options separator ('--'), allowing an attacker with control over the command line options of the sandboxed application, to write data to a specified file.

CVE-2020-17368

It was reported that firejail when redirecting output via --output or
--output-stderr, concatenates all command line arguments into a single string that is passed to a shell. An attacker who has control over the command line arguments of the sandboxed application could take advantage of this flaw to run run arbitrary other commands.

For Debian 9 stretch, these problems have been fixed in version 0.9.44.8-2+deb9u1.

We recommend that you upgrade your firejail packages.

For the detailed security status of firejail please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/firejail

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected firejail package.

Plugin Details

Severity: Critical

ID: 139756

File Name: debian_DLA-2336.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/24/2020

Updated: 2/23/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2020-17368

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:debian:debian_linux:firejail, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/22/2020

Vulnerability Publication Date: 8/11/2020

Reference Information

CVE: CVE-2020-17367, CVE-2020-17368

Detections

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