CVE-2025-23048
published 2025-07-10CVE-2025-23048: 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…
critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | http_server | >= 2.4.35 < 2.4.64 | 2.4.64 |
| apache_software_foundation | apache_http_server | 2.4.35 – 2.4.63 | — |
| debian | apache2 | < apache2 2.4.65-1~deb12u1 (bookworm) | apache2 2.4.65-1~deb12u1 (bookworm) |
| msrc | azl3_httpd_2.4.62-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_httpd_2.4.64-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_httpd_2.4.62-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_httpd_2.4.64-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
osv9.1CRITICAL