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Debian dsa-5666 : flatpak - security update

high Nessus Plugin ID 193600

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 / 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5666 advisory.

 - Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be given a command to run in the specified Flatpak app, optionally along with some arguments. However it is possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It's possible to pass an arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg- desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9, 1.12.9, and 1.14.6. (CVE-2024-32462)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the flatpak packages.

See Also

https://security-tracker.debian.org/tracker/source-package/flatpak

https://security-tracker.debian.org/tracker/CVE-2024-32462

https://packages.debian.org/source/bookworm/flatpak

https://packages.debian.org/source/bullseye/flatpak

Plugin Details

Severity: High

ID: 193600

File Name: debian_DSA-5666.nasl

Version: 1.0

Type: local

Agent: unix

Published: 4/19/2024

Updated: 4/19/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.9

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-2024-32462

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:flatpak, p-cpe:/a:debian:debian_linux:flatpak-tests, p-cpe:/a:debian:debian_linux:gir1.2-flatpak-1.0, p-cpe:/a:debian:debian_linux:libflatpak-dev, p-cpe:/a:debian:debian_linux:libflatpak-doc, p-cpe:/a:debian:debian_linux:libflatpak0, cpe:/o:debian:debian_linux:11.0, cpe:/o:debian:debian_linux:12.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/19/2024

Vulnerability Publication Date: 4/18/2024

Reference Information

CVE: CVE-2024-32462