NewStart CGSL MAIN 6.02 : freerdp Multiple Vulnerabilities (NS-SA-2022-0097)

high Nessus Plugin ID 167467

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

The remote NewStart CGSL host, running version MAIN 6.02, has freerdp packages installed that are affected by multiple vulnerabilities:

- FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license.
All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway. (CVE-2021-41159)

- FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license.
In affected versions a malicious server might trigger out of bound writes in a connected client.
Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1. (CVE-2021-41160)

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

Solution

Upgrade the vulnerable CGSL freerdp packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

Plugin Details

Severity: High

ID: 167467

File Name: newstart_cgsl_NS-SA-2022-0097_freerdp.nasl

Version: 1.2

Type: local

Family: NewStart CGSL Local Security Checks

Published: 11/15/2022

Updated: 11/15/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-41160

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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_main:freerdp-libs, cpe:/o:zte:cgsl_main:6, p-cpe:/a:zte:cgsl_main:libwinpr, p-cpe:/a:zte:cgsl_main:freerdp

Required KB Items: Host/local_checks_enabled, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2022

Vulnerability Publication Date: 10/21/2021

Reference Information

CVE: CVE-2021-41159, CVE-2021-41160

Detections

Analytics