PT-2025-29085 · Libhtp+4 · Libhtp+4

Jasonish · Published 2025-07-10 · Updated 2025-12-02 · CVE-2025-53537

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions LibHTP versions 0.5.50 and below

Description LibHTP is a security-aware parser for the HTTP protocol. Versions 0.5.50 and below contain a traffic-induced memory leak that can lead to process memory starvation and loss of visibility.

Recommendations Set suricata.yaml app-layer.protocols.http.libhtp.default-config.lzma-enabled to false. Update to version 0.5.51.

Exploit

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALT-PU-2025-15218

BDU:2025-14722

CVE-2025-53537

GHSA-V3QQ-H8MH-VPH7

USN-7814-1

Affected Products

Alt Linux

Debian

Libhtp

Linuxmint

Ubuntu

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53537.json · Exploit
• https://github.com/OISF/libhtp/security/advisories/GHSA-v3qq-h8mh-vph7 · Vendor Advisory
• https://github.com/OISF/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7 · Patch
• https://osv.dev/vulnerability/USN-7814-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-28871 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7814-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-53537 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-53537 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53537 · Security Note
• https://ubuntu.com/security/CVE-2025-53537 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-53537 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-45797 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-23837 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-14722 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-53537 · Security Note