CVE-2025-64344
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-26

Last updated on: 2025-12-03

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2025-11-26
Last Modified
2025-12-03
Generated
2026-06-16
AI Q&A
2025-11-27
EPSS Evaluated
2026-06-14
NVD
CVE-2025-64344
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
oisf suricata to 7.0.13 (exc)
oisf suricata From 8.0.0 (inc) to 8.0.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Executive Summary

This vulnerability in Suricata occurs when Lua scripts handle large buffers, which can cause a stack overflow. This affects users who use Lua rules and output scripts that process large amounts of data, potentially leading to a crash or denial of service. The issue has been fixed in Suricata versions 7.0.13 and 8.0.2.

Impact Analysis

The vulnerability can lead to a stack overflow causing Suricata to crash or become unavailable, resulting in a denial of service. This impacts the reliability of network intrusion detection and prevention, potentially leaving networks unmonitored or unprotected during the outage.

Detection Guidance

Detection can involve monitoring for Suricata Lua scripts processing unusually large buffers, which may indicate attempts to trigger the stack overflow. However, no specific detection commands are provided in the available information.

Mitigation Strategies

Immediate mitigation steps include upgrading Suricata to version 7.0.13 or 8.0.2 or later, disabling Lua rules and output scripts, or configuring limits such as stream.depth.reassembly and HTTP response body limits (response-body-limit) to less than half the stack size.

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