OISF Suricata up to 7.0.12/8.0.1 HTTP Response stack-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in OISF Suricata up to 7.0.12/8.0.1. The impacted element is an unknown function of the component HTTP Response Handler. The manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2025-64344. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in OISF Suricata up to 7.0.12/8.0.1. This issue affects an unknown code of the component HTTP Response Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to 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). Impacted is availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-64344 since 10/30/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 276978 (Linux Distros Unpatched Vulnerability : CVE-2025-64344), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.13 or 8.0.2 eliminates this vulnerability. Applying the patch e13fe6a90dba210a478148c4084f6f5db17c5b5a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (276978). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• OISF

Name

• Suricata

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 8.0.0
• 8.0.1

License

• open-source

Website

• Product: https://github.com/OISF/suricata/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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