UBUNTU-CVE-2025-23048 (CVE-2025-23048)
Vulnerability from osv_ubuntu – Published: 2025-07-10 17:15 – Updated: 2026-05-29 10:28 – Source website
VLAI
Details
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.
Severity
9.1 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.18-2ubuntu3.17+esm16"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.18-2ubuntu3.17+esm16"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.18-2ubuntu3.17+esm16"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.18-2ubuntu3.17+esm16"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.18-2ubuntu3.17+esm16"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.18-2ubuntu3.17+esm16"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.17+esm16?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.18-2ubuntu3.17+esm16"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.12-2ubuntu2",
"2.4.17-1ubuntu1",
"2.4.17-2ubuntu1",
"2.4.17-3ubuntu1",
"2.4.18-1ubuntu1",
"2.4.18-2ubuntu1",
"2.4.18-2ubuntu2",
"2.4.18-2ubuntu3",
"2.4.18-2ubuntu3.1",
"2.4.18-2ubuntu3.2",
"2.4.18-2ubuntu3.3",
"2.4.18-2ubuntu3.4",
"2.4.18-2ubuntu3.5",
"2.4.18-2ubuntu3.7",
"2.4.18-2ubuntu3.8",
"2.4.18-2ubuntu3.9",
"2.4.18-2ubuntu3.10",
"2.4.18-2ubuntu3.12",
"2.4.18-2ubuntu3.13",
"2.4.18-2ubuntu3.14",
"2.4.18-2ubuntu3.15",
"2.4.18-2ubuntu3.17",
"2.4.18-2ubuntu3.17+esm1",
"2.4.18-2ubuntu3.17+esm2",
"2.4.18-2ubuntu3.17+esm3",
"2.4.18-2ubuntu3.17+esm4",
"2.4.18-2ubuntu3.17+esm5",
"2.4.18-2ubuntu3.17+esm6",
"2.4.18-2ubuntu3.17+esm7",
"2.4.18-2ubuntu3.17+esm8",
"2.4.18-2ubuntu3.17+esm9",
"2.4.18-2ubuntu3.17+esm10",
"2.4.18-2ubuntu3.17+esm11",
"2.4.18-2ubuntu3.17+esm12",
"2.4.18-2ubuntu3.17+esm13",
"2.4.18-2ubuntu3.17+esm14"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.29-1ubuntu4.27+esm6"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.29-1ubuntu4.27+esm6"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.29-1ubuntu4.27+esm6"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.29-1ubuntu4.27+esm6"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.29-1ubuntu4.27+esm6"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.29-1ubuntu4.27+esm6"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.27+esm6?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.29-1ubuntu4.27+esm6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.27-2ubuntu3",
"2.4.29-1ubuntu1",
"2.4.29-1ubuntu2",
"2.4.29-1ubuntu3",
"2.4.29-1ubuntu4",
"2.4.29-1ubuntu4.1",
"2.4.29-1ubuntu4.2",
"2.4.29-1ubuntu4.3",
"2.4.29-1ubuntu4.4",
"2.4.29-1ubuntu4.5",
"2.4.29-1ubuntu4.6",
"2.4.29-1ubuntu4.7",
"2.4.29-1ubuntu4.8",
"2.4.29-1ubuntu4.10",
"2.4.29-1ubuntu4.11",
"2.4.29-1ubuntu4.12",
"2.4.29-1ubuntu4.13",
"2.4.29-1ubuntu4.14",
"2.4.29-1ubuntu4.16",
"2.4.29-1ubuntu4.17",
"2.4.29-1ubuntu4.18",
"2.4.29-1ubuntu4.19",
"2.4.29-1ubuntu4.20",
"2.4.29-1ubuntu4.21",
"2.4.29-1ubuntu4.22",
"2.4.29-1ubuntu4.23",
"2.4.29-1ubuntu4.24",
"2.4.29-1ubuntu4.25",
"2.4.29-1ubuntu4.26",
"2.4.29-1ubuntu4.27",
"2.4.29-1ubuntu4.27+esm1",
"2.4.29-1ubuntu4.27+esm2",
"2.4.29-1ubuntu4.27+esm3",
"2.4.29-1ubuntu4.27+esm4"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "libapache2-mod-md",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
},
{
"binary_name": "libapache2-mod-proxy-uwsgi",
"binary_version": "2.4.41-4ubuntu3.23+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.41-4ubuntu3.23+esm2?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.41-4ubuntu3.23+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.41-1ubuntu1",
"2.4.41-4ubuntu1",
"2.4.41-4ubuntu2",
"2.4.41-4ubuntu3",
"2.4.41-4ubuntu3.1",
"2.4.41-4ubuntu3.3",
"2.4.41-4ubuntu3.4",
"2.4.41-4ubuntu3.5",
"2.4.41-4ubuntu3.6",
"2.4.41-4ubuntu3.7",
"2.4.41-4ubuntu3.8",
"2.4.41-4ubuntu3.9",
"2.4.41-4ubuntu3.10",
"2.4.41-4ubuntu3.11",
"2.4.41-4ubuntu3.12",
"2.4.41-4ubuntu3.13",
"2.4.41-4ubuntu3.14",
"2.4.41-4ubuntu3.15",
"2.4.41-4ubuntu3.16",
"2.4.41-4ubuntu3.17",
"2.4.41-4ubuntu3.19",
"2.4.41-4ubuntu3.20",
"2.4.41-4ubuntu3.21",
"2.4.41-4ubuntu3.23"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "libapache2-mod-md",
"binary_version": "2.4.52-1ubuntu4.15"
},
{
"binary_name": "libapache2-mod-proxy-uwsgi",
"binary_version": "2.4.52-1ubuntu4.15"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.52-1ubuntu4.15?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
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"fixed": "2.4.52-1ubuntu4.15"
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"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.48-3.1ubuntu3",
"2.4.48-3.1ubuntu4",
"2.4.51-2ubuntu1",
"2.4.52-1ubuntu1",
"2.4.52-1ubuntu2",
"2.4.52-1ubuntu4",
"2.4.52-1ubuntu4.1",
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"2.4.52-1ubuntu4.3",
"2.4.52-1ubuntu4.4",
"2.4.52-1ubuntu4.5",
"2.4.52-1ubuntu4.6",
"2.4.52-1ubuntu4.7",
"2.4.52-1ubuntu4.8",
"2.4.52-1ubuntu4.9",
"2.4.52-1ubuntu4.10",
"2.4.52-1ubuntu4.11",
"2.4.52-1ubuntu4.12",
"2.4.52-1ubuntu4.13",
"2.4.52-1ubuntu4.14"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "libapache2-mod-md",
"binary_version": "2.4.58-1ubuntu8.7"
},
{
"binary_name": "libapache2-mod-proxy-uwsgi",
"binary_version": "2.4.58-1ubuntu8.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.58-1ubuntu8.7?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.58-1ubuntu8.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.57-2ubuntu2",
"2.4.57-2ubuntu3",
"2.4.58-1ubuntu1",
"2.4.58-1ubuntu2",
"2.4.58-1ubuntu6",
"2.4.58-1ubuntu7",
"2.4.58-1ubuntu8",
"2.4.58-1ubuntu8.1",
"2.4.58-1ubuntu8.2",
"2.4.58-1ubuntu8.3",
"2.4.58-1ubuntu8.4",
"2.4.58-1ubuntu8.5",
"2.4.58-1ubuntu8.6"
]
}
],
"aliases": [],
"details": "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.",
"id": "UBUNTU-CVE-2025-23048",
"modified": "2026-05-29T10:28:30Z",
"published": "2025-07-10T17:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-23048"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-23048"
},
{
"type": "REPORT",
"url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2025-23048"
},
{
"type": "REPORT",
"url": "https://httpd.apache.org/security/vulnerabilities_24.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7639-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7639-2"
}
],
"related": [
"USN-7639-1",
"USN-7639-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-23048"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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