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CVE-2024-38536— Suricata http/range: NULL-ptr deref when http.memcap is reached

Quick assessment

Affected
OISF suricata
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.

Suricata是开放信息安全基金会（Open Information Security Foundation，OISF）和其支持的厂商共同开发的一套网络入侵检测系统（IDS）、入侵防御系统（IPS）和网络安全监控引擎，它支持多线程、内置IPv6、可加载预设规则等。 Suricata 7.0.5版本及之前版本存在安全漏洞，该漏洞源于空指针取消引用。

CVSS 7.5 · High EPSS 0.87% · P58

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-38536

Vulnerability Information
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Vulnerability Title
Suricata http/range: NULL-ptr deref when http.memcap is reached
Source: CVE Program / CVE List V5
Vulnerability Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. A memory allocation failure due to `http.memcap` being reached leads to a NULL-ptr reference leading to a crash. Upgrade to 7.0.6.
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
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Suricata 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Suricata是开放信息安全基金会（Open Information Security Foundation，OISF）和其支持的厂商共同开发的一套网络入侵检测系统（IDS）、入侵防御系统（IPS）和网络安全监控引擎，它支持多线程、内置IPv6、可加载预设规则等。 Suricata 7.0.5版本及之前版本存在安全漏洞，该漏洞源于空指针取消引用。
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 suricata < 7.0.6 -

II. Public POCs for CVE-2024-38536

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 12771 chars
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III. Intelligence Information for CVE-2024-38536

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Vendor Advisories for CVE-2024-38536 (1)

Other References for CVE-2024-38536 (2)

Same Patch Batch · OISF · 2024-07-11 · 4 CVEs total

CVE-2024-38535 7.5 HIGH Suricata http2: oom from duplicate headers
CVE-2024-38534 7.5 HIGH Suricata modbus: txs without responses are never freed
CVE-2024-37151 5.3 MEDIUM Suricata defrag: IP ID reuse can lead to policy bypass

IV. Related Vulnerabilities

Same product: suricata
Same vendor: OISF
Same weakness: CWE-476

V. Comments for CVE-2024-38536

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