Description
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.
Published: 2025-07-23
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-22472 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.
History

Tue, 05 Aug 2025 16:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:oisf:libhtp:*:*:*:*:*:*:*:*

Thu, 24 Jul 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Oisf
Oisf libhtp
Vendors & Products Oisf
Oisf libhtp

Wed, 23 Jul 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 23 Jul 2025 20:45:00 +0000

Type Values Removed Values Added
Description 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.
Title LibHTP's memory leak with lzma can lead to resource starvation
Weaknesses CWE-401
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-07-23T20:48:59.864Z

Reserved: 2025-07-02T15:15:11.515Z

Link: CVE-2025-53537

cve-icon Vulnrichment

Updated: 2025-07-23T20:48:57.009Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-23T21:15:26.613

Modified: 2025-08-05T15:48:54.677

Link: CVE-2025-53537

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-24T21:26:44Z

Weaknesses