CVE-2025-23048

CVE Details

Release Date:	2025-07-10
Impact:	Moderate	What is this?

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.

See more information about CVE-2025-23048 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.5
Vector String:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (httpd)	ELSA-2025-15095	2025-09-03
Oracle Linux version 8 (httpd)	ELSA-2025-15123	2025-09-04
Oracle Linux version 8 (mod_http2)	ELSA-2025-15123	2025-09-04
Oracle Linux version 8 (mod_md)	ELSA-2025-15123	2025-09-04
Oracle Linux version 9 (httpd)	ELSA-2025-15023	2025-09-02