In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption.

Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 29 Jul 2025 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache http Server
CPEs cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
Vendors & Products Apache
Apache http Server

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00013}

epss

{'score': 0.0003}


Tue, 15 Jul 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Mon, 14 Jul 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00013}


Thu, 10 Jul 2025 17:00:00 +0000

Type Values Removed Values Added
Description In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.
Title Apache HTTP Server: mod_ssl access control bypass with session resumption
Weaknesses CWE-284
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2025-07-15T19:56:26.553Z

Reserved: 2025-01-10T15:11:45.480Z

Link: CVE-2025-23048

cve-icon Vulnrichment

Updated: 2025-07-11T16:06:18.233Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-10T17:15:46.553

Modified: 2025-07-29T15:14:42.840

Link: CVE-2025-23048

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-07-14T07:19:43Z

Links: CVE-2025-23048 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T22:01:03Z