Improper Access Control Affecting mod_ssl package, versions <1:2.4.64-1.amzn2.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.97% (58th percentile)

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  • Snyk IDSNYK-AMZN2-MODSSL-11473425
  • published5 Aug 2025
  • disclosed10 Jul 2025

Introduced: 10 Jul 2025

CVE-2025-23048  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 mod_ssl to version 1:2.4.64-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2025-2958.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_ssl package and not the mod_ssl package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1