ubuntu-cve-2025-53537
Vulnerability from osv_ubuntu
Published
2025-07-23 21:15
Modified
2026-05-20 15:22
Summary
Details
LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces. In versions 0.5.50 and below, there is a traffic-induced memory leak that can starve the process of memory, leading to loss of visibility. To workaround this issue, set suricata.yaml app-layer.protocols.http.libhtp.default-config.lzma-enabled to false. This issue is fixed in version 0.5.51.
Severity
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libhtp1",
"binary_version": "0.5.15-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@0.5.15-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.15-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.15-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libhtp2",
"binary_version": "1:0.5.26-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@1:0.5.26-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.5.26-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.5.25-1",
"1:0.5.26-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libhtp2",
"binary_version": "1:0.5.32-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@1:0.5.32-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.5.32-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.5.30-1",
"1:0.5.31-1",
"1:0.5.32-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libhtp2",
"binary_version": "1:0.5.39-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@1:0.5.39-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.5.39-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.5.36-1",
"1:0.5.38-1",
"1:0.5.39-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libhtp2",
"binary_version": "1:0.5.46-1ubuntu2+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@1:0.5.46-1ubuntu2+esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.5.46-1ubuntu2+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.5.45-1",
"1:0.5.46-1ubuntu1",
"1:0.5.46-1ubuntu2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libhtp2",
"binary_version": "1:0.5.50-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@1:0.5.50-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.5.49-1",
"1:0.5.50-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libhtp2",
"binary_version": "1:0.5.52-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "libhtp",
"purl": "pkg:deb/ubuntu/libhtp@1:0.5.52-2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.5.50-1",
"1:0.5.52-1",
"1:0.5.52-2"
]
}
],
"aliases": [],
"details": "LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces. In versions 0.5.50 and below, there is a traffic-induced memory leak that can starve the process of memory, leading to loss of visibility. To workaround this issue, set `suricata.yaml app-layer.protocols.http.libhtp.default-config.lzma-enabled` to false. This issue is fixed in version 0.5.51.",
"id": "UBUNTU-CVE-2025-53537",
"modified": "2026-05-20T15:22:55Z",
"published": "2025-07-23T21:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-53537"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-53537"
},
{
"type": "REPORT",
"url": "https://github.com/OISF/libhtp/security/advisories/GHSA-v3qq-h8mh-vph7"
},
{
"type": "REPORT",
"url": "https://github.com/OISF/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7814-1"
}
],
"related": [
"USN-7814-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-53537"
]
}
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Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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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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