Detections
Analytics
NewStart CGSL CORE 5.05 / MAIN 5.05 : flatpak Vulnerability (NS-SA-2023-0012)
high Nessus Plugin ID 174082
Synopsis
The remote NewStart CGSL host is affected by a vulnerability.Description
The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has flatpak packages installed that are affected by a vulnerability:- Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version. (CVE-2021-41133)
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 vulnerable CGSL flatpak packages. Note that updated packages may not be available yet. Please contact ZTE for more information.See Also
Plugin Details
Severity: High
ID: 174082
File Name: newstart_cgsl_NS-SA-2023-0012_flatpak.nasl
Version: 1.0
Type: local
Published: 4/11/2023
Updated: 4/11/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.4
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2021-41133
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/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:zte:cgsl_core:flatpak, p-cpe:/a:zte:cgsl_core:flatpak-builder, p-cpe:/a:zte:cgsl_core:flatpak-debuginfo, p-cpe:/a:zte:cgsl_core:flatpak-devel, p-cpe:/a:zte:cgsl_core:flatpak-libs, p-cpe:/a:zte:cgsl_main:flatpak, p-cpe:/a:zte:cgsl_main:flatpak-builder, p-cpe:/a:zte:cgsl_main:flatpak-debuginfo, p-cpe:/a:zte:cgsl_main:flatpak-devel, p-cpe:/a:zte:cgsl_main:flatpak-libs, cpe:/o:zte:cgsl_core:5, cpe:/o:zte:cgsl_main:5
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 4/11/2023
Vulnerability Publication Date: 10/8/2021
Reference Information
CVE: CVE-2021-41133