USN-6885-4
Vulnerability from osv_ubuntu – Published: 2025-04-07 08:46 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
apache2 regression
Details
USN-6885-1 fixed a vulnerability in Apache. The patch for CVE-2024-38474 was incomplete and caused regressions. This update provides the fix for that issue.
Original advisory details:
Orange Tsai discovered that the Apache HTTP Server mod_rewrite module incorrectly handled certain substitutions. A remote attacker could possibly use this issue to execute scripts in directories not directly reachable by any URL, or cause a denial of service. Some environments may require using the new UnsafeAllow3F flag to handle unsafe substitutions. (CVE-2024-38474)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.18-2ubuntu3.17+esm14"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.18-2ubuntu3.17+esm14"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.18-2ubuntu3.17+esm14"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.18-2ubuntu3.17+esm14"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.18-2ubuntu3.17+esm14"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.18-2ubuntu3.17+esm14"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.17+esm14?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.18-2ubuntu3.17+esm14"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.29-1ubuntu4.27+esm4"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.29-1ubuntu4.27+esm4"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.29-1ubuntu4.27+esm4"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.29-1ubuntu4.27+esm4"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.29-1ubuntu4.27+esm4"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.29-1ubuntu4.27+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.27+esm4?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.29-1ubuntu4.27+esm4"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "libapache2-mod-md",
"binary_version": "2.4.41-4ubuntu3.23"
},
{
"binary_name": "libapache2-mod-proxy-uwsgi",
"binary_version": "2.4.41-4ubuntu3.23"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.41-4ubuntu3.23?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.41-4ubuntu3.23"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "libapache2-mod-md",
"binary_version": "2.4.52-1ubuntu4.14"
},
{
"binary_name": "libapache2-mod-proxy-uwsgi",
"binary_version": "2.4.52-1ubuntu4.14"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.52-1ubuntu4.14?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.52-1ubuntu4.14"
}
],
"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",
"2.4.52-1ubuntu4.2",
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "apache2",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "apache2-bin",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "apache2-data",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "apache2-suexec-custom",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "apache2-suexec-pristine",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "apache2-utils",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "libapache2-mod-md",
"binary_version": "2.4.58-1ubuntu8.6"
},
{
"binary_name": "libapache2-mod-proxy-uwsgi",
"binary_version": "2.4.58-1ubuntu8.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "apache2",
"purl": "pkg:deb/ubuntu/apache2@2.4.58-1ubuntu8.6?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.58-1ubuntu8.6"
}
],
"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"
]
}
],
"aliases": [],
"details": "USN-6885-1 fixed a vulnerability in Apache. The patch\nfor CVE-2024-38474 was incomplete and caused regressions.\nThis update provides the fix for that issue.\n\nOriginal advisory details:\n\n Orange Tsai discovered that the Apache HTTP Server mod_rewrite module\n incorrectly handled certain substitutions. A remote attacker could\n possibly use this issue to execute scripts in directories not directly\n reachable by any URL, or cause a denial of service. Some environments\n may require using the new UnsafeAllow3F flag to handle unsafe\n substitutions. (CVE-2024-38474)\n",
"id": "USN-6885-4",
"modified": "2026-06-25T10:46:24Z",
"published": "2025-04-07T08:46:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6885-4"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/2103723"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "apache2 regression",
"upstream": []
}
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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
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