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CVE-2024-45797— LibHTP's unbounded 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Open Information Security基金会的一款安全感知解析器。该产品主要用于HTTP协议等。 LibHTP 0.5.49之前版本存在安全漏洞，该漏洞源于对HTTP请求和响应标头的没有进行限制，从而导致过多的CPU时间和内存利用率。

CVSS 7.5 · High EPSS 0.73% · P53

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2024-45797

Vulnerability Information
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Vulnerability Title
LibHTP's unbounded header handling leads to denial service
Source: CVE Program / CVE List V5
Vulnerability Description
LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Prior to version 0.5.49, unbounded processing of HTTP request and response headers can lead to excessive CPU time and memory utilization, possibly leading to extreme slowdowns. This issue is addressed in 0.5.49.
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Open Information Security基金会的一款安全感知解析器。该产品主要用于HTTP协议等。 LibHTP 0.5.49之前版本存在安全漏洞，该漏洞源于对HTTP请求和响应标头的没有进行限制，从而导致过多的CPU时间和内存利用率。
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 < 0.5.49 -

II. Public POCs for CVE-2024-45797

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7391 chars
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III. Intelligence Information for CVE-2024-45797

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Vendor Advisories for CVE-2024-45797 (1)

Other References for CVE-2024-45797 (1)

Same Patch Batch · OISF · 2024-10-16 · 6 CVEs total

CVE-2024-45795 7.5 HIGH Suricata detect/datasets: reachable assertion with unimplemented rule option
CVE-2024-47188 7.5 HIGH Suricata http/byte-ranges: missing hashtable random seed leads to potential DoS
CVE-2024-47522 7.5 HIGH Suricata ja4: invalid alpn leads to panic
CVE-2024-47187 7.5 HIGH Suricata datasets: missing hashtable random seed leads to potential DoS
CVE-2024-45796 5.3 MEDIUM Suricata defrag: off by one can lead to policy bypass

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-45797

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