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CVE-2025-64344— Suricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStringBuffer

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Open Information Security基金会的一个网络IDS、IPS和NSM引擎。 Suricata 7.0.13之前版本和8.0.2之前版本存在安全漏洞，该漏洞源于Lua脚本处理大型缓冲区时存在栈溢出，可能导致崩溃。

CVSS 7.5 · High EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-64344

Vulnerability Information
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Vulnerability Title
Suricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStringBuffer
Source: CVE Program / CVE List V5
Vulnerability Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.
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
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Suricata 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Suricata是Open Information Security基金会的一个网络IDS、IPS和NSM引擎。 Suricata 7.0.13之前版本和8.0.2之前版本存在安全漏洞，该漏洞源于Lua脚本处理大型缓冲区时存在栈溢出，可能导致崩溃。
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 < 7.0.13 -

II. Public POCs for CVE-2025-64344

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Qwen3.6-35B-A3B · 9588 chars
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III. Intelligence Information for CVE-2025-64344

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Same Patch Batch · OISF · 2025-11-26 · 7 CVEs total

CVE-2025-64335 7.5 HIGH Suricata is vulnerable to a null deref when used with base64_data
CVE-2025-64334 7.5 HIGH Suricata is vulnerable to unbounded memory growth for decompression
CVE-2025-64333 7.5 HIGH Suricata is vulnerable to a stack overflow from big content-type
CVE-2025-64331 7.5 HIGH Suricata is vulnerable to a stack overflow on large file transfers with http-body-printabl
CVE-2025-64332 7.5 HIGH Suricata is vulnerable to a stack overflow on larger compressed data
CVE-2025-64330 7.5 HIGH Suricata is vulnerable to a heap buffer overflow on verdict

IV. Related Vulnerabilities

Same product: suricata
Same vendor: OISF
Same weakness: CWE-121

V. Comments for CVE-2025-64344

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