NewStart CGSL MAIN 6.02 : libX11 Multiple Vulnerabilities (NS-SA-2024-0059)

critical Nessus Plugin ID 206845

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

The remote NewStart CGSL host, running version MAIN 6.02, has libX11 packages installed that are affected by multiple vulnerabilities:

- A missing validation flaw was found in libX11. This flaw allows an attacker to inject X11 protocol commands on X clients, and in some cases, also bypass, authenticate (via injection of control characters), or potentially execute arbitrary code with permissions of the application compiled with libX11. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
(CVE-2021-31535)

- A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of- bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption. (CVE-2023-3138)

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 libX11 packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

Plugin Details

Severity: Critical

ID: 206845

File Name: newstart_cgsl_NS-SA-2024-0059_libX11.nasl

Version: 1.1

Type: local

Family: NewStart CGSL Local Security Checks

Published: 9/10/2024

Updated: 9/10/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2021-31535

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:zte:cgsl_main:6, p-cpe:/a:zte:cgsl_main:libx11-xcb, p-cpe:/a:zte:cgsl_main:libx11-devel, p-cpe:/a:zte:cgsl_main:libx11-common, p-cpe:/a:zte:cgsl_main:libx11

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/3/2024

Vulnerability Publication Date: 5/27/2021

Reference Information

CVE: CVE-2021-31535, CVE-2023-3138

Detections

Analytics