TencentOS Server 2: firefox (TSSA-2024:0005)

high Nessus Plugin ID 238816

Synopsis

The remote TencentOS Server 2 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0005 advisory.

Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

CVE-2023-6856:
The Mozilla Foundation Security Advisory describes this flaw as:

The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape.

CVE-2023-6857:
The Mozilla Foundation Security Advisory describes this flaw as:

When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary.

*This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.*

CVE-2023-6858:
The Mozilla Foundation Security Advisory describes this flaw as:

Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling.

CVE-2023-6859:
The Mozilla Foundation Security Advisory describes this flaw as:

A use-after-free condition affected TLS socket creation when under memory pressure.

CVE-2023-6860:
The Mozilla Foundation Security Advisory describes this flaw as:

The `VideoBridge` allowed any content process to use textures produced by remote decoders. This could be abused to escape the sandbox.

CVE-2023-6861:
The Mozilla Foundation Security Advisory describes this flaw as:

The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless mode.

CVE-2023-6862:
The Mozilla Foundation Security Advisory describes this flaw as:

A use-after-free was identified in the `nsDNSService::Init`. This issue appears to manifest rarely during start-up.

CVE-2023-6863:
The Mozilla Foundation Security Advisory describes this flaw as:

The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor.

CVE-2023-6864:
The Mozilla Foundation Security Advisory describes this flaw as:

Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

CVE-2023-6865:
The Mozilla Foundation Security Advisory describes this flaw as:

`EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode.

CVE-2023-6867:
The Mozilla Foundation Security Advisory describes this flaw as:

The timing of a button click causing a popup to disappear was approximately the same length as the anti- clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 238816

File Name: tencentos_TSSA_2024_0005.nasl

Version: 1.1

Type: local

Family: Tencent Local Security Checks

Published: 6/16/2025

Updated: 6/16/2025

Supported Sensors: Nessus

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:2, p-cpe:/a:tencent:tencentos_server:firefox

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/etc/os-release, Host/TencentOS/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 1/2/2024

Vulnerability Publication Date: 1/2/2024

Detections

Analytics