Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2023-6396

critical Nessus Plugin ID 262284

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - Gitlab reports: XSS and ReDoS in Markdown via Banzai pipeline of Jira Members with admin_group_member custom permission can add members with higher role Release Description visible in public projects despite release set as project members only through atom response Manipulate the repository content in the UI (CVE-2023-3401 bypass) External user can abuse policy bot to gain access to internal projects Client-side DOS via Mermaid Flowchart Developers can update pipeline schedules to use protected branches even if they don't have permission to merge Users can install Composer packages from public projects even when Package registry is turned off Unauthorized member can gain Allowed to push and merge access and affect integrity of protected branches Guest users can react (emojis) on confidential work items which they cant see in a project (CVE-2023-6396)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://ubuntu.com/security/CVE-2023-6396

Plugin Details

Severity: Critical

ID: 262284

File Name: unpatched_CVE_2023_6396.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 9/10/2025

Updated: 9/10/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

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-2023-6396

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gitlab

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 11/30/2023

Reference Information

CVE: CVE-2023-6396