Detections
Analytics

Atlassian Confluence 7.19.x < 8.5.20 / 8.6.x < 9.2.2 / 9.3.x < 9.3.2 DoS (CONFSERVER-99540)

high Nessus Plugin ID 236969

Synopsis

The remote Atlassian Confluence host is missing a security update.

Description

The version of Atlassian Confluence Server running on the remote host is affected by a denial of service vulnerability as referenced in the CONFSERVER-99540 advisory.

 - Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually. (CVE-2025-24970)

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

Solution

Upgrade to Atlassian Confluence version 8.5.20, 9.2.2, 9.3.2 or later.

See Also

https://jira.atlassian.com/browse/CONFSERVER-99540

Plugin Details

Severity: High

ID: 236969

File Name: confluence_confserver-99540.nasl

Version: 1.1

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 5/20/2025

Updated: 5/20/2025

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-24970

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:atlassian:confluence

Required KB Items: installed_sw/Atlassian Confluence

Exploit Ease: No known exploits are available

Patch Publication Date: 4/3/2025

Vulnerability Publication Date: 2/10/2025

Reference Information

CVE: CVE-2025-24970