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CVE-2024-38534— Suricata modbus: txs without responses are never freed

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。攻击者利用该漏洞通过特制的 modbus 流量可导致流量中资源无限积累。

CVSS 7.5 · High EPSS 0.87% · P56
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I. Basic Information for CVE-2024-38534

Vulnerability Information
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Vulnerability Title
Suricata modbus: txs without responses are never freed
Source: CVE Program / CVE List V5
Vulnerability Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Crafted modbus traffic can lead to unlimited resource accumulation within a flow. Upgrade to 7.0.6. Set a limited stream.reassembly.depth to reduce the issue.
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
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。攻击者利用该漏洞通过特制的 modbus 流量可导致流量中资源无限积累。
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-2024-38534

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8286 chars
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In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2024-38534

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Patches & Fixes for CVE-2024-38534 (1)

Vendor Advisories for CVE-2024-38534 (1)

Other References for CVE-2024-38534 (2)

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

CVE-2024-38535 7.5 HIGH Suricata http2: oom from duplicate headers
CVE-2024-38536 7.5 HIGH Suricata http/range: NULL-ptr deref when http.memcap is reached
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-770

V. Comments for CVE-2024-38534

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