CVE-2025-23048

NameCVE-2025-23048
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4270-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apache2 (PTS)bullseye2.4.62-1~deb11u1vulnerable
bullseye (security)2.4.65-1~deb11u1fixed
bookworm2.4.65-1~deb12u1fixed
bookworm (security)2.4.62-1~deb12u2vulnerable
trixie2.4.65-2fixed
forky, sid2.4.65-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
apache2sourcebullseye2.4.65-1~deb11u1DLA-4270-1
apache2sourcebookworm2.4.65-1~deb12u1
apache2source(unstable)2.4.64-1

Notes

https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2025-23048
Fixed by: https://github.com/apache/httpd/commit/c4cfa50c9068e8b8134c530ab21674e77d1278a2
possible regression for misconfigured load balancer
NEWS: https://salsa.debian.org/apache-team/apache2/-/blob/0874e522244079e8436b576ac7ae0527f2ce97f1/debian/apache2.NEWS

Search for package or bug name: Reporting problems