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CVE-2024-23837— LibHTP unbounded folded header handling leads to denial service

Quick assessment

Affected
OISF libhtp
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LibHTP是一款安全感知解析器。该产品主要用于HTTP协议等。 LibHTP 0.5.46 版本之前存在安全漏洞，该漏洞源于精心设计的流量可能会导致 HTTP 标头的处理时间过长，从而导致拒绝服务。

CVSS 7.5 · High EPSS 1.19% · P67

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-23837

Vulnerability Information
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Vulnerability Title
LibHTP unbounded folded header handling leads to denial service
Source: CVE Program / CVE List V5
Vulnerability Description
LibHTP is a security-aware parser for the HTTP protocol. Crafted traffic can cause excessive processing time of HTTP headers, leading to denial of service. This issue is addressed in 0.5.46.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
LibHTP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibHTP是一款安全感知解析器。该产品主要用于HTTP协议等。 LibHTP 0.5.46 版本之前存在安全漏洞，该漏洞源于精心设计的流量可能会导致 HTTP 标头的处理时间过长，从而导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OISF libhtp < 0.5.46 -

II. Public POCs for CVE-2024-23837

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 11384 chars
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III. Intelligence Information for CVE-2024-23837

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Patches & Fixes for CVE-2024-23837 (1)

Vendor Advisories for CVE-2024-23837 (1)

Mailing List Discussions for CVE-2024-23837 (1)

Other References for CVE-2024-23837 (1)

Same Patch Batch · OISF · 2024-02-26 · 5 CVEs total

CVE-2024-23835 7.5 HIGH Suricata's pgsql: memory exhaustion use on record parsing
CVE-2024-23836 7.5 HIGH crafted traffic can cause denial of service
CVE-2024-23839 7.1 HIGH Suricata http: heap use after free with http.request_header and http.response_header keyw
CVE-2024-24568 5.3 MEDIUM Suricata http2: header handling evasion

IV. Related Vulnerabilities

Same product: libhtp
Same vendor: OISF
Same weakness: CWE-770

V. Comments for CVE-2024-23837

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