Linux Distros Unpatched Vulnerability : CVE-2025-49812

high Nessus Plugin ID 243694

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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.

- In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using SSLEngine optional to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade. (CVE-2025-49812)

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

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 243694

File Name: unpatched_CVE_2025_49812.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 8/5/2025

Updated: 8/27/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2025-49812

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:mod_proxy_html, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:httpd-manual, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:httpd-tools, p-cpe:/a:centos:centos:httpd, p-cpe:/a:centos:centos:mod_session, p-cpe:/a:redhat:enterprise_linux:httpd-manual, p-cpe:/a:redhat:enterprise_linux:httpd-devel, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:httpd-filesystem, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:mod_session, p-cpe:/a:redhat:enterprise_linux:httpd, p-cpe:/a:centos:centos:httpd-tools, p-cpe:/a:redhat:enterprise_linux:mod_ssl, p-cpe:/a:debian:debian_linux:apache2, p-cpe:/a:redhat:enterprise_linux:mod_lua, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:mod_ssl, p-cpe:/a:centos:centos:httpd-core, p-cpe:/a:centos:centos:httpd-devel, p-cpe:/a:redhat:enterprise_linux:mod_md, p-cpe:/a:centos:centos:mod_md, p-cpe:/a:canonical:ubuntu_linux:apache2, p-cpe:/a:centos:centos:mod_ldap, p-cpe:/a:centos:centos:mod_lua, p-cpe:/a:redhat:enterprise_linux:httpd-core, p-cpe:/a:redhat:enterprise_linux:mod_ldap, p-cpe:/a:redhat:enterprise_linux:mod_proxy_html, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:centos:centos:httpd-filesystem, cpe:/o:redhat:enterprise_linux:6, cpe:/o:debian:debian_linux:12.0

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/8/2025

Reference Information

CVE: CVE-2025-49812

Detections

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